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ON THE SUPPOSED JURY-DEPENDENCE OF EVIDENCE LAW
FREDERICK SCHAUERt
If there were no juries, would there be a law of evidence? And
should there be? These questions are not about whether this or that
rule of evidence owes its existence to the institution of the jury, and
are thus not about whether particular evidence rules should be modified or eliminated when juries are not present. Nor are they about
those many rules of evidence that are premised on such wildly mistaken folk wisdom aboutjury behavior that they are in desperate need
of modification or elimination in light of what we now know from the
social sciences about how people in general and juries in particular
actually decide and deliberate. Rather, my question is whether the law
of evidence, in the large, is so substantially a product of the institution
of the jury itself that ifjuries did not exist, then vast swaths of evidence
law would, and should, not exist as well.
This question is not merely of academic or historical interest.
Numerous American trial judges, echoing what scholars since Jeremy
Bentham have urged,' essentially discard large chunks of the law of
evidence when they sit without ajury. Time and again, especially in
civil litigation and more than occasionally even in criminal cases, objections to the admissibility of evidence are met with the judicial re-
t Frank Stanton Professor of the first Amendment, John F. Kennedy School of
Government, Harvard University. This Article was written while I had the honor of
serving as the Daniel R. Fischel and Sylvia M. Neil Distinguished Visiting Professor of
Law at the University of Chicago. I am grateful for comments from Christopher Buccafusco, Laird Kirkpatrick, Richard McAdams, Dale Nance, Eric Posner, Chaim Saiman, Matthew Stephenson, and William Twining; from the members of the Drafts
Reading Group at the Harvard Law School; and from the participants in the Legal
Theory Workshop at the University of Pennsylvania Law School and the Works in Progress Seminar at the University of Chicago Law School.
I See infra Part
I.
2 See, e.g.,
Barry C. Feld, TheJuvenile Court Meets the Principleof the Offense: Legislative
Changes in Juvenile Waiver Statutes, 78J. CRIM. L. & CRIMINOLOGY 471, 477 (1987) (recounting departure from rules of evidence in juvenile proceedings); G. Michael Fenner, The Forced Use of Inadmissible Hearsay Evidence in Bankruptcy Court, 8 AM. BANKR.
INST. L. REV. 453, 476 (2000) (describing disregard of evidence rules in bankruptcy
trials); A. Leo Levin & Harold K. Cohen, The Exclusionay Rules in Nonjuy Criminal
Cases, 119 U. PA. L. REv. 905, 908 (1971) (urging official recognition of widespread
practice of ignoring rules of evidence in nonjury cases).
(165)
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sponse of, "I'll let it in and just give it the weight it deserves. 3 Because most of the rules of evidence are essentially exclusionary, and
because judges (like the rest of us) do not want to screen themselves
off from potentially useful information, many judges persistently treat
the law of evidence as a counterproductive encumbrance to be jettisoned whenever possible. Indeed, there are frequent calls in the academic literature to make formally and legally permissible what all acknowledge to be the widespread informal practice.4
But are these trial judges and their academic forebears right? Is
the law of evidence, which owes an appreciable part of its provenance
to a concern about the cognitive or decision-making capacities of jurors, appropriately limited to the circumstances of its birth? When
3 "[J]udges presiding at non-jury trials often admit evidence
indiscriminately, rul-
ing on weight and relevance only after all the facts have been presented." Liana Gioia
Per Ramfjord, Note, Reforming At-Will Employment Law: A Model Statute, 16 U. MICH.J.L.
REFORM 389, 426 (1983). Forjudicial acknowledgment and endorsement of the practice, see, for example, State v. Stout, 46 S.W.3d 689, 703 (Tenn. 2001) (adopting principle that trial judges should have "wider discretion than would normally be allowed under the [state's] Rules of Evidence" (quoting State v. Sims, 45 S.W.3d 1, 14 (Tenn.
2001))); Commonwealth v. Irwin, 639 A.2d 52, 54-55 (Pa. Super. Ct. 1994) (noting that
trial judge is presumed to be able to disregard prejudicial evidence). In obvious frustration with what it saw as a widespread practice, the Seventh Circuit found it necessary
to note that "[t]he Federal Rules of Evidence are statutes, and district judges may not
disregard statutes no matter how inconvenient or cumbersome they believe the rules
to be." In re Oil Spill by the Amoco Cadiz off the Coast of France on March 16, 1978,
954 F.2d 1279, 1305 (7th Cir. 1992); see also Mark I. Bernstein, Expert Testimony in Pennsylvania, 68 TEMP. L. REV. 699, 716 & n.110 (1995) (noting tendency of judges to ignore rules of evidence regarding expert testimony in nonjury trials).
4 See, e.g., James H. Chadbourn, Bentham and the Hearsay Rule-A
Benthamic View of
Rule 63(4)(c) of the Uniform Rules of Evidence, 75 HARV. L. REV. 932, 937 (1962) (presenting Bentham's argument for eliminating hearsay rule in both jury and nonjury cases);
Kenneth Culp Davis, An Approach to Rules of Evidence for Nonjuyy Cases, 50 A.B.A. J. 723
(1964) (advocating distinct rules of evidence for nonjury trials); Peter L. Murray &
John C. Sheldon, Should the Rules of Evidence be Modified for Civil Non-Jury Trials?, 17 ME.
B.J. 30 (2002) (urging formal approval of relaxed rules of evidence in civil nonjury
cases); John Sheldon & Peter Murray, Rethinking the Rules of Evidentiary Admissibility in
Non-Jury Trials, 86 JUDICATURE 227, 231 (2003) ("[The role of t]he American law of
evidentiary admissibility.. . in civil, non-jury proceedings is due for extinction.").
5 See CHRISTOPHER B. MUELLER & LAIRD C.
KIRKPATRICK, EVIDENCE § 1.1, at 2 (3d
ed. 2003) (arguing that mistrust of juries is one of the primary reasons for evidence
law); Henry M. Hart, Jr. & John T. McNaughton, Evidence and Inference in the Law, in
EVIDENCE AND INFERENCE 48, 56 (Daniel Lerner ed., 1959) (discussing rules of evidence "designed to exclude evidence to which the jury might give too much weight");
Edmund M. Morgan, The Juy and the Exclusionary Rules of Evidence, 4 U. CHI. L. REV.
247, 255 (1937) (noting that judicial discussions of hearsay rule indicate a distrust of
jury's ability to handle such testimony). For the argument that the existence of the
jury was a necessary but not sufficient cause of the development of a comprehensive
law of evidence, and that the development of the corpus of evidence law was a product
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juries are removed from the picture, should much of the law of evidence be removed as well? Although rarely put
in such stark terms,
S
6
that conclusion reflects the conventional wisdom. Yet while this may
be the conventional wisdom, my aim here is to ask whether the conventional wisdom is correct and to suggest some reasons for believing
that it is not.
In asking this question about the foundations of evidence law, I
take it as common ground that those rules of evidence serving extrinsic
goals present almost wholly different issues from the ones I discuss
here. Privileges, for example, do not purport to serve epistemic
goals,' and even those judges and commentators who question the
need for juror-free evidence law typically have little problem with excluding properly privileged evidence-such as confidential conversations between spouses" or between lawyer and client-even when juries are absent. And so too with various other rules-such as the
inadmissibility of evidence of subsequent repairs and other remedial
of both the jury and the adversary system, see John H. Langbein, HistoricalFoundations
of the Law of Evidence: A View from the Ryder Sources, 96 COLUM. L. REV. 1168, 1201-02
(1996). For the view that the exclusion of hearsay predates Anglo-American fears
aboutjury mistakes, see Frank R. Herrmann, The Establishment of a Rule Against Hearsay
in Romano-CanonicalProcedure, 36 VA.J. INT'L L. 1 (1995). Cf Crawford v. Washington,
541 U.S. 36, 53-54 (2004) (connecting history of hearsay exclusion with history of the
right to confront opposing witnesses).
6 "[M]istrust of juries is the single overriding reason for the law of evidence."
CHRISTOPHER B. MUELLER & LAIRD C. KIRKPATRICK, EVIDENCE UNDER THE RULES 1
(5th ed. 2004). The causal relationship between the institution of the jury and the entirety of the law of evidence is also one of the principal themes explored in MIRJAN R.
DAMAsKA, EVIDENCE LAW ADRIFT 26-57 (1997), although Damaska also attributes the
rise of the rules of evidence to other adversarial and procedural attributes of the common law approach to litigation, id. at 74-124. For an extensive account of this conventional "abolitionist" wisdom, see ALEX STEIN, FOUNDATIONS OF EVIDENCE LAW 108-16
(2005).
7 At least privileges do not typically serve the epistemic
goals of the trial, although
they may serve other epistemic goals, such as facilitating the production of knowledge
in various out-of-court settings. For example, exclusion of otherwise relevant information communicated by a patient to a psychotherapist, seeJaffee v. Redmond, 518 U.S. 1,
15 (1996), may keep relevant information out of a trial, but may foster the provision by
the patient to the psychotherapist of information relevant to treatment.
8 See, e.g., United States v. Estes, 793 F.2d 465,
468 (2d Cir. 1986) (recognizing
marital confidential communications privilege); People v. Daghita, 86 N.E.2d 172, 174
(N.Y. 1949) (same).
9 See, e.g., United States v. Ramirez, 608 F.2d 1261,
1268 n.12 (9th Cir. 1979) (suggesting that privilege covers statements made both by lawyer and by client); United
States v. Kovel, 296 F.2d 918, 922 (2d Cir. 1961) (holding that attorney-client privilege
extends to communications with accountant assisting an attorney).
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other culpable conduct,'l • of liability
measures to prove negligence or1213
insurance," and of plea bargain and settlement negotiations "-that
are designed to create the proper incentives for socially desirable outof-court conduct. Such rules are the exception, however, and most of
the exclusionary rules are designed with the jury in mind and with the
goal of increasing the accuracy and efficiency of fact finding under
circumstances of jury decision making. In other words, they are (internally) epistemic and not extrinsic. Such rules comprise the bulk of
evidence law and furnish its guiding inspiration, and it is such rules
that are so often assumed to be largely jury dependent. 4 My aim here
is to question this assumption, not in terms of its historical accuracy,
but in terms of the goals that the rules of evidence might now be
properly thought to serve.
I. THE SKEPTICAL TRADITION
Interestingly, the entire law of evidence is a relatively modem
creation. Although the exclusion of hearsay and rudimentary corroboration requirements are at least as old as the common law itself,
the identification of evidence as a distinct legal realm and as a unified
body of law postdates the law of, say, property, by at least several hundred years. There was no systematic attempt to compile the various
bits and pieces of evidentiary rulings into a distinct topic until well
into the eighteenth century. 15 So whenJeremy Bentham launched his
10FED.
R. EVID. 407.
11 FED. R. EVID. 411.
12 FED. R. EVID. 410.
13 FED. R. EVID. 408.
14 Even those who see the rules of evidence as a product of features
of the common law adversarial system other than the presence of a jury, see DAMASKA, supra note
6, at 75 (arguing that party control over evidence "affects the fundamentals of evidentiary thought"), appear to be largely convinced that a rule-based and exclusionary approach to evidence is fundamentally misguided, id. at 142 (noting that decline ofjury
trials and weakening of the adversarial system may render evidentiary rules obsolete);
see also Mirjan Damaska, Free Proof and Its Detractors, 43 AM. J. COMP. L. 343, 348-52
(1995) (comparing effects of exclusionary rules in the Anglo-American and continental legal systems).
15 The seminal work is SIR JEFFREY GILBERT, THE LAW OF EVIDENCE (London,
Henry Lintot 1756) (1754). Even more comprehensive was THOMAS PEAKE, A COMPENDIUM OF THE LAW OF EVIDENCE (London, S. Rider 1801). See generally T.P. Gallanis,
The Rise of Modem Evidence Law, 84 IOWA L. REV. 499 (1999); A.D.E. Lewis, The Background to Bentham on Evidence, 2 UTILITAS 195, 202 (1990) (tracing beginnings of evidence law to late seventeenth century and a "series of devices designed to widen the
scope for the courts to interfere in the result arrived at by the jury").
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attack on virtually the whole idea of evidence law in the early nineteenth century, 6 it is fair to say that he was trying to nip what he saw
as a dangerous weed in the7 bud, as opposed to attempting to disman'
tle a long-standing edifice.
Bentham is of particular interest to us because he framed the issue
in a way that leaves no doubt about what is at stake. For Bentham, the
rules of evidence-almost all of them-were needless and often
suboptimizing distractions. The ideal system, he proposed, was one of
"free proof," an approach, to oversimplify only slightly, in which evidence was admitted if logically relevant-if the consideration of some
piece of evidence made a proposition more or less likely than it would
have been without that evidence-and was then given the weight that
its intrinsic and particular probative value justified."' Thus, courts
would proceed just as ordinary people proceeded when using their
common sense to make everyday factual determinations.' 9 In making
ordinary nonjudicial factual determinations, people do not, insisted
Bentham, make use of artificial rules of exclusion or need special
rules of corroboration for entire classes of events. And thus there was
no justification for the law to do otherwise. Free Proof, for Bentham
and his followers, was simply ordinary epistemology applied to legal
matters,2 0 and that is why Bentham favorably compared what he la-
16 JEREMY BENTHAM, RATIONALE OFJUDIcIAL EVIDENCE (John
S. Mill ed., Fred B.
Rothman & Co 1995) (1827). Especially noteworthy is Bentham's claim that "[a]lmost
every rule that has ever been laid down on the subject of evidence" is "repugnant to
the ends of justice." 1 BENTHAM, supra, at 4. For extensive discussion, see WILLIAM
TwINING, THEORIES OF EVIDENCE: BENTHAM AND WIGMORE (1985); Lewis, supra note
15, at 203-16. For the view that Bentham's critique of the exclusionary rules of evidence may be somewhat narrower than is commonly supposed, see Dale A. Nance, The
Best Evidence Principle,73 IOWA L. REV. 227, 275 (1988).
17 Thus, as late as 1794, Edmund Burke observed, at the trial of Warren
Hastings,
that the law of evidence was "comprised in so small a compass that a parrot... might
get them by rote in one half-hour and repeat them in five minutes." WILLIAM TWINING, RETHINKING EVIDENCE: EXPLORATORY ESSAYS 37 (Cambridge Univ. Press 2d ed.
2006) (1990).
18 Id. at 209 (stating that Bentham's notion of Free Proof allowed
for no restrictions other than the "general principles of practical reason").
19 "A large class of 'exclusionary' rules bars certain types of evidence
from reaching the trier of fact, though these same types of evidence would cheerfully and blithely
be regarded as probative in everyday life." ALVIN I. GOLDMAN, KNOWLEDGE IN A SoCIAL WORLD 291 (1999).
20 See Susan Haack, Epistemology Legalized: Or, Truth,Justice, and
the American Way,
49 AM. J.JuRIs. 43, 56 (2004) ("[T]hat exclusionary rules are inherently at odds with
the epistemological desideratum of completeness.... is the main theme of Bentham's
treatise on evidence .... ").
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beled the Natural System to its obvious (at least to him) inferior, the
Technical System.2 '
Although Bentham's views did not carry the day in undiluted
form, they have been profoundly influential, if only to put on the
permanent defensive anyone who might dare to think that there
ought to be rules of evidence-especially nondefeasible exclusionary
rules, as opposed to general but highly defeasible principles (or standards, if you will) of applied epistemology. 22 And in the face of this
shift in the burden of proof (another one of the rules that Bentham
would have eliminated), a tradition developed of explaining the rise
and continuation of the rules of evidence as being substantially the
byproduct of the institution of the jury. This was the signal contribution of James Bradley Thayer, who in 1898 in his A Preliminary Treatise
on Evidence at the Common Law emphasized the essential narrowness of
the exclusionary rules of evidence, urged that they be yet narrower
still, and justified the ones that did and should remain as the consequence either of principles of substantive (and not procedural) law or
23
For Thayer,
in order to take account of the likely failings of juries.
and for many who followed him, it was the jury that was at the heart of
understanding the essentially peculiar and often counterproductive
institution of the law of evidence.
Thayer's impact has turned out to be less through his Treatise and
more through his teaching and his students, the most prominent of
21 See TWINING, supra note 16, at 48-51 (summarizing characteristics of Natural and
Technical systems). There is an important parallel here between Bentham's view
about the worth (or not) of rules of evidence and his view about the limited value of
rules in general. See GERALDJ. POSTEMA, BENTHAM AND THE COMMON LAW TRADITION
224-25 (1986). Just as Bentham thought that rules were important for the public but
less so, to put it mildly, for judges and lawmakers, so too did he think much the same
thing about the rules of evidence. But for a skeptical view of Bentham's influence on
subsequent evidence law, see C.J.W. ALLEN, THE LAW OF EVIDENCE IN VICTORIAN ENGLAND 7 (1997). And for an account of Bentham's view of rules that diverges in part
from Postema's, see John Dinwiddy, Bentham, in BENTHAM: SELECTED WRITINGS OF
JOHN DINWIDDY (William Twining ed., 2004).
22 See Laird C. Kirkpatrick, Scholarly and InstitutionalChallenges to the Law of Evidence:
From Bentham to the ADR Movement, 25 LOY. L.A. L. REv. 837, 847, 850 (1992) (describing Bentham's preference for evidentiary principles rather than rules). It is important
to note that the issue is not whether the rules of evidence should be codified in something like the Federal Rules of Evidence or the California Evidence Code. Rather, it is
whether the admission or exclusion of evidence should be governed by rules at all, regardless of whether those rules are common law rules or parts of comprehensive evidence codes.
23 JAMES BRADLEY THAYER, A PRELIMINARY TREATISE ON EVIDENCE AT THE COMMON
LAw 508-38 (Boston, Little, Brown & Co. 1898).
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whom was John Henry Wigmore. Wigmore is known primarily for his
monumental and largely descriptive systematization of the law of evi24
dence, but he also had a prescriptive side. 25 And when dealing not
with what the law of evidence was, but instead about what it ought to
be, Wigmore urged the development of a science of proof that was
logically antecedent to the rules of evidence, and that would remain
important even were the rules of admissibility-which he viewed as artificial-to be abolished. 6 Certain fundamental principles underlying
these artificial rules, insisted Wigmore, were highly important, but
their importance was attributable almost entirely to the existence of
the jury. 7 Juries could hardly be trusted, Wigmore and many others
believed, to apply the more scientific principles of proof direcdy to
particular issues, and thus needed rules of evidence to steer them in
the right direction. 28 Such steering would not be necessary for legally
24 JOHN HENRY WIGMORE, EVIDENCE IN TRIALS AT
COMMON LAW (Peter Tillers ed.,
1983).
25
See
27
Id. § 8(c), at 632.
supra note 16, at 117 (describing Wigmore's opposition to rigid
rules; instead proposing that evidence rules should provide mere guidance).
26 1 WIGMORE, supra note 24, § 8(c), at 630 ("A complete abolition of
the rules in
the future is at least arguable, not merely in theory but in realizable fact.... [l]n the
United States... justice can be done without the orthodox rules of evidence.").
TWINING,
Id. at 632-33 (discussing "weaknesses" of jurors). As I will
develop at greater
length in Part IV, there is an interesting parallel here to the literature on act- and ruleutilitarianism. Infra Part IV; see, e.g., J.J.C. Smart, Extreme and Restricted Utilitarianism,in
CONTEMPORARY UTILITARIANISM 99 (Michael D. Bayles ed., 1968) (discussing opposing
views in utilitarianism as to whether actors should follow rules or make moral judgments on a case-by-case basis). Most obviously to the point is R.M. Hare's infelicitously
labeled distinction in Moral Thinking: Its Levels, Method and Point between "archangels"
and "proles." R.M. HARE, MORAL THINKING: ITS LEVELS, METHODS, AND POINT 44-45
(1981). For Hare, direct application of the principles of utility was beyond the capacities of the proles even if not for the (more ideal than real) archangels, and so although
the more-or-less mythical archangels might be entrusted with this responsibility, the
more-or-less mythical proles should be given more mechanical rules which, when applied by them, would produce more utility than would be produced were the proles entrusted with direct application of utilitarian principles. See id. at 46-47. This idea, similar to John Stuart Mill's argument in Utilitarianism for (falsely) teaching the
importance of justice to ordinary people as a way of getting them to produce the
maximum amount of utility, John Stuart Mill, Utilitarianism,in THE BASIC WRITINGS OF
JOHN STUART MILL 233, 277-301 (Dale E. Miller ed., 2002), and similar to a number of
arguments presented by Henry Sidgwick, HENRY SIDGWICK, THE METHODS OF ETHICS
440-50 (7th ed. 1981) (discussing the utilitarian basis for rules of justice), is plainly
relevant to the debates about juries and the rules of evidence. In many of these debates, judges-especially in the eyes of judges-are the archangels, and jurors are the
proles. So although jurors are thought not to be trusted to apply scientific and philosophical principles of proof directly-hence the exclusionary rules of evidence28
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astute judges, however, 29 and thus the view developed that the law of
evidence, to the extent it was necessary at all, was necessary largely because of the cognitive and epistemic failings ofjuries.
II. EXIT THEJURY
Were all, or even much, litigation to take place before ajury, questioning the jury-dependence of the bulk of evidence law might be of
little more than academic or historical interest. In fact, however, jury
trials are very much the exception rather than the rule, and this becomes more and more true every day. The positions of Bentham,
Thayer, Wigmore, and others are thus increasingly important precisely because the jury has become an endangered institution worldwide. Even in the United States, the number of criminal and civil jury
trials has declined substantially in recent years.3' And in every common law country outside the United States, the civil jury has for all
practical purposes disappeared, with libel cases typically being virtu-
there would, under this view, be no reason not to allowjudges to do so when the jury is
removed from the picture.
2 And, afortiori,in those legal systems not employing juries as finders of fact.
30 See supra note 4; see also Charles T. McCormick, Tomorrow's Law
of Evidence, 24
A.B.A.J. 507, 580-81 (1938) (questioning the value of exclusionary rules of evidence as
the institution of trial by jury diminishes in significance).
31 See Marc Galanter, The Vanishing Trial: An Examination of Trials and
Related Matters in Federal and State Courts, 1 J. EMPIRICAL LEGAL STUD. 459, 462 tbl.1, 512 tbl.7
(2001) (showing a decreasing rate of jury trials as a percentage of total trials over
time); PATRICK WALKER & PRAGATI PATRICK, ADMINISTRATIVE OFFICE OF THE UNITED
STATES COURTS, TRENDS IN FIREARMS CASES FROM FISCAL YEAR 1989 THROUGH 1998,
AND THE WORKLOAD IMPLICATIONS FOR THE U.S. DISTRICT COURTS (2000),
www.uscourts.gov/firearms/firearmsOO.html (indicating that between 1989 and 1998,
there was a thirty-eight percent decline in jury trials for all criminal offenses). What
the existing research shows is that the decline in jury trials is not attributable to a decline in the number of trials, but that it is at least in part attributable to a decline in the
proportion ofjury trials within the domain of trials.
32 See, e.g., JOHN HENRY MERRYMAN ET AL., THE CIVIL LAW
TRADITION: EUROPE,
LATIN AMERICA, AND EAST ASIA 1014 (1994) (stating that in common law countries
other than the United States, "the civil jury has been abolished"); RICHARD A. POSNER,
THE FEDERAL COURTS: CHALLENGE AND REFORM 193 n.1 (1996) ("[T]he abolition of
the jury in civil cases [is] a course that the rest of the civilized world took long
ago...."); KONRAD ZWEIGERT & HEIN KOTZ, AN INTRODUCTION TO COMPARATIVE LAW
280 (Tony Weir trans., 2d ed. 1987) ('Jury trials admittedly occur only in criminal
cases in England today ... "); Neil Vidmar, A Historicaland Comparative Perspective on
the Common Law Jury, in WORLD JURY SYSTEMS 1, 3 (Neil Vidmar ed. 2000) ("[W]ith the
exception of the United States and parts of Canada, the jury has been largely abandoned for civil cases...."). It is an interesting question how much of the United
States's outlier status is attributable to the Seventh Amendment and its state constitu-
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ally the sole exception. Indeed, in some common law countries even
the criminal jury is in rapid decline. South Africa eliminated criminal
as well as civil juries almost forty years ago, and it is noteworthy and
surprising that there has been almost no move to reinstate even the
33
criminal jury in post-apartheid South Africa. Even in those common
law countries that do retain the criminal jury, such as Great Britain,
Ireland, Canada, New Zealand, and Australia, the actual number of
trials in which ajury sits is rapidly declining, with more and more of
the business of criminal adjudication being allocated to magistrates'
34
courts in which there is generally no jury at all.
When we look at the countries outside of the United States in
which the jury is in decline, we see a commensurate decline-just as
Bentham, Thayer, and Wigmore would have predicted-in the law of
evidence as well. In 1972 Rupert Cross, at the time the leading English authority on the law of evidence,35 announced in a debate about
the Criminal Law Revision Committee that he was working for the day
when his own subject would be abolished.36 In magistrates' courts in
England, Australia, and New Zealand it is the brave lawyer indeed who
makes an evidentiary objection.37 The standard South African treatise
on the law of evidence is a far sparser work than its American counterparts, and even the rules that exist in South Africa are ever more
tional counterparts and how much to the efforts of interest groups like the American
Trial Lawyers Association.
33 See Christopher Roederer, The Transformation of South
African Private Law After
Ten Years of Democracy: The Role of Torts (Delict) in the Consolidation of Democracy, 37
COLUM. HUM. RTS. L. REV. 447, 456 n.34 (2006) (noting abolition of criminal juries in
South Africa); Tracy Gilstrap Weiss, Comment, The Great Democratizing Principle: The
Effect on South Africa of Planning a Democracy Without a Jury System, 11 TEMP. INT'L &
COMP. L.J. 107, 122 (1997) (discussing lack of support in the South African legal
community for reinstatement ofjuries).
54 See, e.g., Neil Cameron et al., The New Zealand Jury,
LAw & CONTEMP. PROBS.,
Spring 1999, at 103, 106 (1999) (documenting shift toward magistrate and district
court trials in New Zealand); Kimberly Ann Page, The Sale of EnglishJustice,29 DENV. J.
INT'L L. & POL'Y 1, 1-6 (2000) (lamenting increased use in the United Kingdom of
nonjury courts for criminal trials).
35 See RUPERT CROSS, EVIDENCE (5th ed. 1979); RUPERT CROSS, AN ATTEMPT TO
UPDATE THE LAW OF EVIDENCE (1973); RUPERT CROSS & NANCY WILKINS, AN OUTLINE
OF THE LAW OF EVIDENCE (3d ed. 1971);J.D. HEYDON, CROSS ON EVIDENCE (6th Austl.
ed. 2000); COLIN TAPPER, CROSS ON EVIDENCE (7th ed. 1990).
36 The episode is described in TWINING, supra note 17, at 1. Cross's more
nuanced
and well-developed position is set out in Rupert Cross, The Evidence Report: Sense or Nonsense--A Very Wicked Animal Defends the I Ith Report of the CriminalLaw Revision Committee,
1973 CRIM. L. REV. 329.
37 TWINING, supra note
17, at 212.
I" L.H. HOFFMAN, THE SOUTH AFRICAN LAW OF EVIDENCE (2d ed., 1970).
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rarely enforced in courts or taken seriously by judges.3") And the same
trend can be found in Canada, Ireland, Australia, New Zealand, and
much of the rest of the non-American common law world. 40 The law
of evidence does still exist in all of these increasingly, or entirely, juryfree countries, but the widespread belief in such jurisdictions is that it
exists substantially as a path-dependent relic of earlier days; something
to be taken lightly at all times and ignored whenever possible. 4'
This view of the jury-dependence of evidence law is compatible
with the state of affairs in the typically jury-free civil law world as well.
In civil law countries, the jury is largely an alien institution, so it is not
too much of an overstatement to say that the law of evidence simply
never developed at all. 42 There are, in civil law jurisdictions, various
bits and pieces of evidentiary rules that resemble some of the common
law rules of evidence, but the civil law neither has a systematic law of
evidence nor, not surprisingly, does it have its Thayers or its Wigmores
or its Morgans or its Crosses to explicate it.43 As a matter of historical
and comparative fact, therefore, it is hard to deny that the existence of
the jury has been a substantial (even if not exclusive) cause of the de39I am grateful to Sir Richard Goldstone for discussion
on this point.
40 See, e.g., Khan v. The Queen, [1990]
2 S.C.R. 531, 548 (Can.) (recognizing an
exception to the hearsay rule allowing evidence regarding a child's statements regarding a crime committed against the child, subject to consideration of "necessity and reliability"); Morris v. Cameron, [2006] 240 N.S.R.2d 123, para. 25 (Can.) (allowing introduction of hearsay evidence that "does not fall under an existing hearsay exception"
based on consideration of its "necesssity and reliability"); David M. Tanovich, Starr Gazing: Looking into the Future of Hearsay in Canada,28 QUEEN'S L.J. 371 (2003) (analyzing
future impact of the relaxed, "necessity and reliability" approach to hearsay evidence
adopted in Canadian courts).
41 See Laird C. Kirkpatrick, Evidence Law in
the Next Millennium, 49 HASTINGS L.J.
363, 365 (1998) ("[A]fter England abolished the right to ajury trial in most civil cases,
it then significantly expanded the admissibility of hearsay.").
42 See Kenneth Culp Davis, An Approach to the Rules of Evidence
for Nonjury Cases, 50
A.B.A.J. 723, 726 (1964) (urging the Anglo-American legal world to follow the European civil law tradition and largely eliminate those rules that eliminate the use of "evidence that has probative force"); see also Damaska, supra note 14, at 343-48; Karl H.
Kunert, Some Observationson the Origins and Structure of Evidence Under the Common Law
System and the Civil Law System of "Free Proof" in the German Code of Civil Procedure, 16
BuFF. L. REV. 122, 14143 (1966);John H. Langbein, The GermanAdvantage in Civil Procedure, 52 U. CHI. L. REV. 823, 829 (1985) (noting the lack of a counterpart to AngloAmerican evidence law in Germany); M-L. Rassat, ForensicExpertise and the Law of Evidence in France, in FORENSIC EXPERTISE AND THE LAw OF EVIDENCE 53, 53-57 (J.F. Nijboer et al. eds., 1993).
43 See Mirjan Damaska, Evidentiary Barriers to Conviction and Two
Models of Criminal
Procedure. A ComparativeStudy, 121 U. PA. L. REV. 506, 509 (1973) (noting, in regard to
rules of evidence, that "there is so much highly complex law on the common law side
and so little law on the civil law side").
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velopment (and to a significant extent the continuation) of anything
resembling a comprehensive law of evidence.
III. THE ASCENDENCY OF FREE PROOF
Against this historical and comparative background the views of so
4
many contemporary American trial judges 5 are not difficult to explain. We know that the law of evidence, as a historical matter, arose
to a significant extent because of the institution of the jury. We know
that there have been influential skeptics about the entire body of evidence law for almost two centuries, and that defenders of evidence law
against these skeptical attacks have relied largely on the alleged cognitive, rational, and deliberative failings of juries. We know that legal
systems that have never had juries have never developed a comprehensive law of evidence. And we know that legal systems that have
seen the jury decline in importance have seen a commensurate decline in importance in the law of evidence. So, against this background, it is surely no surprise to discover that even in the United
States, where the decline in the use of the jury has been the smallest,
the immediate absence of ajury is taken by many trial judges as sufficient cause to treat the law of evidence as somewhere between only
mildly suggestive and largely irrelevant. Nor is it a surprise to discover
that in the United States, as elsewhere, there is an active call to discard
the (intrinsic) formal rules of evidence in favor of something resem46
bling a Free Proof system when ajury is not part of the picture.
This attitude is most apparent with respect to hearsay. Putting
aside criminal cases, where the exclusion of hearsay serves diverse
purposes enshrined in the Sixth Amendment by the Confrontation
44 Even those who see the existence of the jury as only one of the multiple
causes
of the development of the law of evidence, see DAMASKA, supra note 6, at 2-4 (suggesting that the adversary system may be part of the root of evidence law); Langbein, supra
note 5, at 1197 (tracing the source of evidentiary law to "the rise of adversary criminal
procedure"), do not deny that the existence of the jury has been a significant contributory factor. Nor do they claim that the law of evidence in common law countries
would be what it has become without the historical presence of the institution of the
jury trial.
45 And not-so-contemporary ones as well. See Learned Hand, Address to
the Association of the Bar of the City of New York: The Deficiencies of Trials to Reach the
Heart of the Matter (November 17, 1921), in LECTURES ON LEGAL Topics: 1921-22, at
89, 98-99 (1926) ("Much of the delay and bickering which does more than deface a
court room would be avoided by a recognition that the rules of evidence are practical
and discretionary.").
46 See supra note
4.
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47
Clause, the traditional operation of the hearsay rule ordinarily produces the exclusion ofS logically
relevant and, thus, otherwise admissi481
ble and useful evidence.
We can have greater confidence in the
truth of what Jane told Sam, as recounted at trial by Sam in the absence ofJane, when we have Sam's testimony than when we do not. It
is true, to be sure, that the opportunity to cross-examine Jane would
increase the ability to test the truth ofJane's statement, 49 but the value
ofJane's statement as recounted by Sam even without the opportunity
to cross-examine Jane is rarely zero. To put it in Bayesian terms, we
approach the question of the likely truth of some proposition with a
prior probability of the truth of that proposition, and if we are then
told by Sam thatJane affirmed that proposition, we would typically believe that the probability of the truth of that statement has risen by virtue of even our second-hand knowledge of Jane's endorsement of it,
especially if there is reason to believe that Jane had actual knowledge,
even if there is no opportunity to testJane's knowledge or the truth of
her assertion by cross-examination, by observing her demeanor, or by
putting her under oath. Yet although Jane's out-of-court statement
thus ordinarily has between some and a considerable degree of probative value, such a prototypical hearsay statement would usually (and
under the existing rules properly) be excluded, 5 not because it is not
probative, but despite the fact that it is probative, and very often
highly so.
There are, of course, numerous exceptions to the categorical exclusion of hearsay. The Federal Rules of Evidence list at least thirty,' l
See Davis v. Washington, 126 S. Ct. 2266 (2006); Crawford v. Washington,
541
U.S. 36 (2004).
48 "[T]he exclusion of hearsay... strikes at the root of
the jury's function by
usurping its power to process quite ordinary evidence, the type of information routinely encountered by jurors in their everyday lives." Note, The TheoreticalFoundation of
the HearsayRules, 93 HARV. L. REV. 1786, 1805 (1980).
49 See United States v. Evans, 216 F.3d 80, 85 (D.C. Cir. 2000) ("Cross-examination
may be the 'greatest legal engine ever invented for the discovery of truth'...."(quoting California v. Green, 399 U.S. 149, 158 (1970))); Leake v. Hagert, 175 N.W.2d 675,
683 (N.D. 1970) (noting that cross-examination reveals "the grounds of [a witness's]
assertion and his qualification to make it"); Roger Park, A Subject Matter Approach to
Hearsay Reform, 86 MICH. L. REV. 51, 57 (1987) ("[One] justification for excluding
hearsay depends upon the belief that a witness describing an out-of-court statement is
likely to be less reliable than a witness describing nonverbal events, or at least that
cross-examination will be less effective on a witness to a statement.").
50 See FED. R. EVID. 801
(c), 802.
51 The structure of Rules 801, 803, and 804 of
the Federal Rules of Evidence
makes an exact count difficult. Some of what were previously exceptions (party admissions, most prominently) are now defined as non-hearsay in Rule 801(d), see FED. R.
47
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and then include the catchall Rule 807just in case old ones were forgotten or new ones emerge. Yet even though there are many exceptions, it would be a mistake to underestimate the force of the basic
rule, which especially but by no means only in criminal trials, plainly
excludes a substantial amount of otherwise relevant evidence. And
because hearsay evidence is so often obviously logically relevant, we
can see the initial appeal of its formal elimination when a jury is not
part of the picture, and we can see as well why it is ubiquitous that
judges, magistrates, arbitrators, masters, and diverse other adjudicators, when sitting without a jury, will typically but more informally allow hearsay evidence to be offered, announcing that such evidence
will be given exactly the weight its intrinsic probative value deserves,
presumably discounted for the epistemic losses coming from a nonfirst-hand account, from the want of an oath, from the lack of an opportunity to cross-examine the declarant, and from the absence of the
ability of the trier of fact to observe the declarant's demeanor. But
implicit in current practice in nonjury settings in the United States
and elsewhere is the fact that such a discount in epistemic value is
never total, which is simply another way of saying that the evidence is
admitted and given the weight that it is thought, in the final analysis
and in the particular case, to deserve.
A similar conclusion prevails with respect to the so-called best evidence rule, more properly called the original documents rule. 2 As
with hearsay, the evidence excluded under strict application of the
original documents rule is only infrequently irrelevant in the logical
sense. When presented with a copy of some document, even an unclear copy under somewhat suspicious circumstances, we rarely in ordinary life discount its epistemic value entirely. Rather, we treat the
possibility of miscopying or worse as a reason to discount the reliability of the evidence. This discounting rarely produces a probative value
of zero, however, despite the fact that this is precisely what a strict ap-
EVID. 801 (d) (identifying statements that are not hearsay), and many of the remaining
exceptions set forth in Rules 803 and 804 have numerous parts, see FED. R. EVID. 803
(providing extensive hearsay rule exceptions even when declarant is available as a witness); FED. R. EVID. 804 (listing hearsay exceptions when declarant is unavailable as a
witness).
52 See
FED. R. EVID. 1001-1008. The common law rule is well stated and applied in
Sirico v. Cotto, 324 N.Y.S.2d 483, 486 (Civ. Ct. 1971). See also Meyers v. United States,
171 F.2d 800, 813 (D.C. Cir. 1948) (stating that the best evidence rule is more than a
"legal cliche" and must be enforced).
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plication of the original documents rule does in actual practice. But
because the original documents rule tends towards the exclusion of
otherwise useful evidence, it, like the hearsay rule, sees itself applied
sees itself the subject of persistent calls for
increasingly narrowly, and
4
its elimination as well.'
Much the same can be said about the various forms of character
and propensity evidence , about many of the exclusions of expert testimony6 (even after the arguably limiting approach of Daubert v.
Merrill-Dow Pharmaceuticals,Inc.57 and Kumho Tire Co. v. Carmichael S),
about some of the exclusions of opinion evidence, 59 about a number
I do not mean to ignore the extent to which the original documents rule-like
the hearsay rule, the authentication requirements, and much else-has been weakened in recent years, with much of this weakening now enshrined in the Federal Rules
of Evidence. See, e.g., Herzig v. Swift & Co., 146 F.2d 444, 445 (2d Cir. 1945) (Frank, J.)
("Perhaps the most to be said for the 'best evidence rule' is that it may serve on occasion as a good mnemonic device."); Kenneth S. Broun, Authentication and Contents of
Writings, 1969 LAW & SOC. ORDER 611, 612-24 (assessing the effect of codification under the Federal Rules of Evidence). But because much of the impetus for this weakening is exactly what I challenge here, I will continue to focus on what remains, rather
than on what has been relaxed or eliminated.
54 See Herzig, 146 F.2d at 445 (questioning the value of the original
documents
rule); see also United States v. Winkle, 587 F.2d 705, 712 (5th Cir. 1979) (concluding
that a plain violation of the best evidence rule was not grounds for reversal); Edward
M. Cleary & John W. Strong, The Best Evidence Rule: An Evaluation in Context, 51 IOWA
L. REv. 825, 847-48 (1966) (concluding that the best evidence rule will diminish as the
scope of discovery expands).
55 See FED. R. EVID. 404-405; see also David P. Leonard, The Use of
Characterto Prove
Conduct: Rationality and Catharsis in the Law of Evidence, 58 U. COLO. L. REV. 1, 56-57
(1987) (urging modification of existing rules so as to allow use of character evidence
in civil cases); MUELLER & KIRKPATRICK, supra note 5, § 4.15, at 193 (concluding that
Rule 404(b) "adopts an inclusionary rather than exclusionary approach" to much evidence of past acts and wrongs); Mirjan R. Damaska, Propensity Evidence in Continental
Legal Systems, 70 CHI.-KENT L. REv. 55, 55 (1994) (suggesting that rules against character evidence are problematic).
56 See Tuf Racing Prods., Inc. v. Am. Suzuki Motor Corp., 223
F.3d 585, 591 (7th
Cir. 2000) (holding that formal credentials are not necessary to qualify as expert witness); In re Paoli R.R. Yard PCB Litig., 35 F.3d 717, 741 (3d Cir. 1994) (noting that
Rule 702 prescribes a "liberal" policy for the admission of expert testimony); Fox v.
Dannenberg, 906 F.2d 1253, 1256 (8th Cir. 1990) ("[A]n individual can qualify as an
expert... even though he may lack academic qualifications in the particular field of
expertise.").
57 509 U.S. 579, 585-95 (1993).
58 526 U.S. 137, 147
(1999).
59 See FED. R. EVID. 701; White v. Walker, 932 F.2d 1136, 1141 (5th
Cir. 1991) (excluding lay opinion on child psychology). Rule 701 is itself a liberalizing rule, as is
recognized in, for example, Staley v. Bridgestone/Firestone, Inc., 106 F.3d 1504, 1513
(10th Cir. 1997) (indicating that Rule 701 allows for "somewhat speculative" opinion).
53
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of the requirements for authentication, 60about limitations on the use
of demonstrative evidence 6 ' and about numerous other less important exclusionary rules. In all of these instances the evidentiary rule
operates to exclude otherwise relevant evidence, and for almost all of
these rules the exclusion is typically explicitly justified in terms of
avoiding the risk of misleading the jury or of preventing the jury from
mis-assessing the actual value of the evidence. 62 Thus, as a consequence of the assumed jury-dependence of this panoply of exclusionary rules, we have seen that judges sitting without juries often treat
these exclusions and related requirements as being, at best, hints (or
rules of thumb) about how much weight to give the evidence, rather
than as genuine rules demanding categorical exclusion.63 We have
seen that proposals to codify or formalize this state of affairs surface
with considerable frequency. We have seen that the Federal Rules of
Evidence have softened, compared to the situation existing at common law prior to enactment of the Rules, each of these rules of exclusion. And we have seen that the exclusionary rules are among the
rules that no longer exist, or never existed in the first place, in jurisW See FED. R. EVID. 901. Rules 902 and 903 both substantially liberalize
the traditional authentication requirements. FED. R. EVID. 902 (listing documents that do not
need extrinsic evidence of authenticity for admission); FED. R. EVID. 903 ("The testimony of a subscribing witness is not necessary to authenticate a writing unless required
by laws of the jurisdiction .... "); see also United States v. Jimenez Lopez, 873 F.2d 769,
772 (5th Cir. 1989) (emphasizing that the listed forms of authentication in Rule 901
are not exclusive).
61 See RICHARD 0. LEMPERT ET AL., A MODERN APPROACH TO EVIDENCE
1146 (3d
ed. 2000) (noting that "[s]ome courts do not distinguish between real and demonstrative evidence").
62 See, e.g., United States v. Daniels, 770 F.2d 1111, 1116 (D.C.
Cir. 1985) (justifying exclusion of character evidence by reference to "fear thatjuries will tend to give it
excessive weight"); GOLDMAN, supra note 19, at 294 (observing that evidence can be
both relevant and misleading); MUELLER & KIRKPATRICK, supra note 5, § 9.32, at 1050
(noting that demonstrative evidence may mislead juries); Richard D. Friedman, Minimizing the Jury Over-Valuation Concern, 2003 MICH. ST. L. REv. 967, 967-68 (observing
that the most common justification for excluding hearsay, character, and prior misconduct evidence is the fear thatjuries will overvalue such evidence).
63 To make clear what is implicit in my entire analysis, I do not consider totally
transparent (to their background justifications) rules of thumb (what some might call
"guidelines") to be variants of (real) rules. See FREDERICK SCHAUER, PLAYING BY THE
RULES: A PHILOSOPHICAL ANALYSIS OF RULE-BASED DECISION-MAKING IN LAW AND IN
LIFE 104-11 (1991); Frederick Schauer, Exceptions, 58 U. CHI. L. REV. 871, 893-98
(1991). As the presence of rules of thumb in the act-utilitarian canon indicates, CONTEMPORARY UTILITARIANISM, supra note 28, a rule that can be set aside whenever its
background justifications would indicate a contrary outcome is hardly a rule at all.
And that is why the Free Proof tradition, my primary target here, is no less a nonrule
tradition for its occasional employment of transparent or nonweighty heuristic rules.
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dictions without juries or whose recent use of the jury has been considerably diminished. Taken together, therefore, it is hard to escape
the conclusion that Bentham's views are very much on the ascendancy, that much of the entire law of evidence is in decline, and that
arguments based on the Free Proof approach are close to winning the
day.
IV. RULES AND THE RULES OF EVIDENCE
The question whether judges sitting without ajury should discard
or relax the rules of evidence" 4 can be seen as but one manifestation
of a set of larger and deeper issues about the role of rules in decision
making. And one way of seeing this parallel is by imagining that the
existing skepticism about the role of rules in epistemic decision making-the skepticism of Bentham, Thayer, Wigmore, and many contemporary trial judges-were to be applied to normative or prescriptive substantive legal rules. As act-consequentialists have long insisted,
numerous subsidiary rules are best seen as heuristics, or rules of
thumb, whose ultimate goal is to help us make those all-thingsconsidered decisions that will maximize utility (or some other ultimate value occupying a status equivalent to utility, but within a nonutilitarian, although still consequentialist, framework). 6'
For the
committed but sophisticated act-consequentialist, rules have their
place, but the decision maker must discard the indications of those
rules when, all things (including the value of having a rule) considered,) following the rule will produce less utility (or whatever) than
would be produced by a different decision.67
There are counterparts to this perspective within legal theory.
Some of these counterparts are descriptive, and we associate many of
the Legal Realists with the view that judges typically make what seem
And thus also the question whether systems without juries should adopt rules of
evidence, or develop more rules of evidence than they now have.
65 See supra note 63.
Sophisticated act-utilitarianism is developed or discussed in
many of the contributions in CONTEMPORARY UTILITARIANISM, supra note 28.
6 There are connections between this position and the view of evidence expressed
in Richard A. Posner, An Economic Approach to the Law ofEvidence, 51 STAN. L. REv. 1477,
1481-83 (1999).
67 See Donald H. Regan, Authority and Value: Reflections on Raz's Morality
of Freedom, 62 S. CAL. L. REv. 995, 1030 (1989) ("[11f the authority is clearly in error, its directives are not binding."); Donald H. Regan, Law's Halo, in PHILOSOPHY AND LAw 15, 1625 (Jules Coleman & Ellen Frankel Paul eds., 1987);J.J.C. Smart, Extreme and Restricted
Utilitarianism,6 PHIL. Q. 344, 348-49 (1956) (suggesting that it is illogical to obey a rule
when breaking it would achieve a better result).
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to them to be the best all-things-considered decision, using specific
rules of law as after-the-fact rationalizations rather than as being genuinely decision motivating or decision guiding.
And others are normative, seeing in accounts as diverse as those of Ronald Dworkin 69 and
Michael Moore 0 the efforts to see legal rules not as legal ends in
themselves, but instead as potentially transparent and defeasible indicators of the larger and deeper goals that judges should strive to
achieve, or of the larger and deeper rights that judges should seek to
locate. 7'
The view that legal rules are deployed largely as ex post rationalizations
for decisions reached on other grounds (which grounds might well include decisions on the
basis of other rules, including prescriptive rules about policy orjustice that are not part
of the law as such) is the central empirical claim of Legal Realism. SeeJEROME FRANK,
LAW AND THE MODERN MIND 130 (1930) (describing how a chief function of the law "is
to enable the judges to give formal justifications. .. of the conclusions at which they
otherwise arrive"); K.N. LLEWELLYN, THE BRAMBLE BUSH: SOME LECTURES ON LAW AND
ITS STUDY (1930); Joseph C. Hutcheson, Jr., TheJudgment Intuitive: The Function of the
"Hunch" in Judicial Decision, 14 CORNELL L.Q. 274, 278 (1929); Underhill Moore &
Charles Callahan, Law and Learning Theory: A Study in Legal Control, 53 YALE L.J. 1, 79
(1943). Although not all of Realism and not all of the writings of the major Realists fit
this exact description, see WILLIAM TWINING, KARL LLEWELLYN AND THE REALIST
MOVEMENT 169 (1973) ("[L]aw andjustice had no need at all to be in conflict or even
in too much tension, but could instead represent a daily working harmony." (quoting
KARL LLEWELLYN, THE COMMON LAW TRADITION: DECIDING APPEALS 513 (1960))),
the lack of decision-determining power for legal rules remains a defining characteristic of Realism, see Brian Leiter, Legal Indeterminacy, I LEGAL THEORY 481 (1995); Brian
Leiter, Legal Realism and Legal Positivism Reconsidered, 111 ETHICS 278 (2001); John
Henry Schlegel, American Legal Realism and Empirical Social Science: The Singular Case of
Underhill Moore, 29 BUFF. L. REV. 195, 239 (1980); Charles M. Yablon, Justifying the
Judge's Hunch: An Essay on Discretion, 41 HASTINGS L.J. 231, 236 (1990) (arguing that
realists "denied that the actions of legal decisionmakers were the determinate results
of applying general legal rules found in statutes or appellate cases").
69 See RONALD DWORKIN, LAW'S EMPIRE 15-20 (1986); RONALD
DWORKIN, TAKING
RIGHTS SERIOUSLY (1977).
70 See Michael S. Moore, The Interpretive
Turn in Modern Theory: A Turn for the
Worse?, 41 STAN. L. REV. 871, 956 (1989) ("Anglo-American legal practice, which is
largely interpretive, cannot be insulated from external questions."); Michael S. Moore,
A Natural Law Theory of Interpretation, 58 S. CAL. L. REV. 277, 383-84 (1985) (claiming
that even after a judge has looked at the "ordinary meaning" of a legal rule, she must
then decide whether her initial "interpretation serves the purpose of the rule in question"); Michael S. Moore, The Semantics ofJudging, 54 S. CAL. L. REV. 151, 278 (1981)
(stating that judges should not just look at laws in a "literal" sense, but look behind
them, in light of their "ethical intuitions about what, in rules of this sort, the word
ought to mean").
71 In fact, both Dworkin and Moore, albeit in slightly
different ways, reach this result by indirection, arguing that there is a difference between the superficial rule-the
seeming meaning of the words of the rule formulation-and the deeper or "real"
meaning of the rule itself. DWORKIN, LAW'S EMPIRE, supra note 69, at 16-17; Moore,
The Semantics ofJudging, supra note 70, at 278; see also David 0. Brink, Legal Theory, Legal
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The foregoing paragraph contains more than a bit of a caricature,
but that is my basic point. Neither the Realists (or at least most of
them) nor Dworkin nor Moore believe that substantive legal rules do
not comprise in important ways fixed points, such that a judge who
thought of them as simply rules of thumb would remain faithful to the
judicial office. We expect judges to take substantive legal rules seriously, largely because we see such rules as serving important functions
in practical reasoning that would be poorly served were judges to see
themselves as simply making what seemed to them to be the best allthings-considered decision. Indeed, even were that the goal, we have
a healthy enough appreciation of the variability of views and values
and talents among actual judges that we see legal rules as cabining
some of this variation by holding judges to the rules of law even when
those rules might generate morally, politically, or pragmatically
suboptimal results. 72
To the extent that any of this resonates with respect to the substantive rules of law in general, however, then it is at least arguable
that it resonates pro tanto with respect to that set of procedural or
epistemic rules that we label as the law of evidence. If we think that
normal substantive legal rules have a point other than as transparent
heuristics, then we might well think that the rules of evidence also
have a point, and not just as epistemic rules of thumb. Many or most
of the reasons that lead us to abjure the q'adi,73 or the unconstrained
pragmatist, with respect to normative determinations should lead us
to have largely commensurate worries with respect to factual ones.
Wary of Platonic guardians, we impose on our judges more or less
Interpretation,andJudicial Review, 17 PHIL. & PUB. AFF. 105, 125 (1988) (arguing that we
should see laws as "human artifacts" and thus look at the "reasons, purposes, and intentions of those who enacted the law" in addition to the actual "meaning of the
words"). For present purposes, however, we can let this complication pass.
72 On the larger distinction between rule-based
and all-things-considered decisions, see LARRY ALEXANDER & EMILY SHERWIN, THE RULE OF RULES: MoRALTY,
RULES, AND THE DILEMMAS OF LAW (2001); FREDERICK SCHAUER, PLAYING BY THE
RULES, supra note 63, at 77-78.
73 The reference here is to Max Weber's (largely inaccurate,
as a matter of Islamic
law) characterization of the Islamic q'adijudge (which Weber spelled "khadi") as the
ultimate embodiment of discretionary and contextual decision making. See MAX WEBER, LAW IN ECONOMY AND SOCIETY 351 (Max Rheinstein ed., Edward Shils & Max
Rheinstein trans., 1967) ("[Khadi justice] decides cases... non-formalistically and in
accordance with concrete ethical or other practical value-judgments."); see also ANTHONY T. KRONMAN, MAX WEBER 76-77 (1983) (describing Weber's interpretation of
so-called "khadi justice" as "adjudication of a purely ad hoc sort in which cases are decided on an individual basis and in accordance with an indiscriminant mixture of legal, ethical, emotional and political considerations").
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concrete substantive rules of law, but the worries about Platonic
guardians hardly evaporate when we ask them to reach factual rather
than normative conclusions. And if this is so, then there are reasons
to fear a Free Proof tradition that turn out to be not that much different from the reasons to fear a Free Law 4 tradition.
As noted above, v" the issue bears some affinity with a plausible
rule-consequentialist tradition dating back to John Stuart Mill, relying
heavily on Henry Sidgwick, and having its best-known more-or-less
76
modern embodiment in the later work of R.M. Hare.
As David Lyons has demonstrated, rule-consequentialism collapses into actconsequentialism if we assume that the maker of the rule and follower
of the rule are the same agent." But for Mill in chapter 5 of Utilitarianism, the argument for encouraging people to pursue justice as an
end in itself resides in the possibility that pursuing justice will lead to
greater
utility
than will encouraging ordinary people to pursue utility
S
78
directly. Sidgwick expanded on these themes, in ways that attracted
the epithet "Government House utilitarianism,, 79 and Hare developed
the idea further with his unfortunately labeled distinction between
"archangels" and "proles."80 But although the labels were unfortunate, the idea is important, because it captures the insight that there
are distinctions that can be understood and drawn by some people
under some conditions that are not distinctions that other people can
reasonably be expected to understand, internalize, and apply."'
The relevance of this tradition to our problem should now be obvious. For Bentham, Thayer, and Wigmore, for many of their contemporary academic followers, and for many members of the contem74 There is, of course, a tradition with just that
name, see generally James E. Herget
& Stephen Wallace, The German Free Law Movement as the Source of American Legal Realism, 73 VA. L. REV. 399, 407-19 (1987), but I make no claim of any connections here.
75 See supra note
28.
76 For a more recent expression, see CONRAD
D. JOHNSON, MORAL LEGISLATION:
A LEGAL-POLITICAL MODEL FOR INDIRECT CONSEQUENTIALIST REASONING (1991); see
also Larry Alexander, Pursuing the Good--Indirectly, 95 ETHICS 315, 318 (1985); R.B.
Brandt, Fairnessto Indirect Optimific Theories in Ethics, 98 ETHICS 341, 342 (1988).
77 DAVID LYONS, FORMS AND LIMITS
OF UTILITARIANISM (1965).
78 Mill, supra note 28, at 300 ("[J]ustice is a name for certain
moral requirements,
which, regarded collectively, stand higher in the scale of social utility, and are therefore of more paramount obligation, than an),others ....").
BERNARD WILLIAMS, The Point of View of the Universe: Sidgwick and
the Ambitions of
Ethics, in MAKING SENSE OF HUMANITY AND OTHER PHILOSOPHICAL PAPERS, 1982-1993
at 153, 166 (1995).
so See supra note 28.
81
See Frederick Schauer, Slippery Slopes, 99 HARV. L. REV. 361, 380-81 (1985).
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porary trial bench, judges are the archangels and jurors the proles.
Rules are for other and weaker people. Conversely, therefore, those
who perceive themselves as possessing greater wisdom, training, and
insight tend also to perceive themselves as having far less need for the
rules that society often employs as second-best strategies in order that
third-best decision makers will not persistently make fourth-best decisions. So when the proles are not part of the picture, Bentham and
his successors appear to have believed, the reasons for rules are vastly
diminished, and the archangels can make the best all-thingsconsidered epistemic decisions in much the same way as they might
make the largely rule-free all-things-considered substantive and normative ones.
I do not want to press the parallel too far, but the similarities are
nonetheless suggestive. And what the parallels most suggest is that the
question of Free Proof, even though it is about facts and not about
substantive prescriptions, is largely a question about rules, and about
when it might be valuable to think of rules as decision-making devices
that are designed for worse rather than for better decision makers.
To the extent that we really do think that judges are simply better at
many things than juries, it would follow that this might apply as much
to factual determinations as to the question of how to resolve the disputes and make the decisions that those facts raise. But if we truly believed this, then we would have far fewer substantive legal rules than
we actually now do have, and a far more casual (or "rule of thumb")
attitude towards the substantive rules that we have than is in fact the
case. Thus, our existing stock of substantive legal rules and our actual
perspective on the force of those rules suggest that we believe that
such rules serve a valuable function in, among other things, channeling and constraining judicial decisions, reducing the variability among
judges and their decisions, and adding important elements of predictability and reliance to the legal andjudicial processes.
It remains possible that none of these considerations leading to
the size and weight of our stock of prescriptive legal rules apply to factual determinations. It is far more plausible to believe, however, that
many of the same considerations apply to factual determinations as to
normative ones. There may well be differences, to be sure, but it appears likely that there are far more similarities between ordinary prescriptive legal rules and the epistemic rules of evidence than most
judges and most commentators have historically believed, and believe
even now. To the extent that this is so, the burden of proof shifts to
the commentators and judges to show that the reasons for having le-
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gal rules in general do not apply when those rules shape and constrain the fact-finding process.8' And we have little reason to believe
that this burden of proof has yet been carried.
V. ON THE RELATIVE CAPACITIES OFJUDGES ANDJURIES
There is occasional resistance in the literature to attributing much
of the initial ascendancy and subsequent decline in the power of the
exclusionary rules of evidence to the alleged cognitive deficiencies of
jurors. This resistance-criminal cases with constitutional dimensions
asideS-is typically some variation on the basic theme of 'juries are
not as dumb as you think they are,""" often (and admirably) supported
82 An important contemporary tradition in evidence scholarship urges
rejection of
the traditional atomistic/Bayesian/incremental approach to admission and exclusion
of items of evidence in favor of a holistic and coherence-based approach, which is argued to be more compatible with the way in which people actually reason about facts.
See, e.g., Ronald J. Allen, Factual Ambiguity and a Theory of Evidence, 88 NW. U. L. REV.
604, 629 (1994) ("[E]ach decision is a unique function of the interaction of the parties' sense of ambiguity with the fact finders' understanding of it that remains rational
notwithstanding each decision's uniqueness and our inability to capture the decision
process in a set of necessary and sufficient rules."); Ronald I. Allen & Brian Leiter,
Naturalized Epistemology and the Law of Evidence, 87 VA. L. REV. 1491, 1550 (2001) (criticizing evidence scholarship for clinging to "[a] priori formalisms"); Michael S. Pardo,
Comment, JudicialProof Evidence, and Pragmatic Meaning: Toward Evidentiary Holism, 95
Nw. U. L. REv. 399, 440 (2000) ("The empirical and analytical work suggests a shift
from this parataxic approach to a more holistic perspective."); Dan Simon, A Third
View of the Black Box: Cognitive Coherencein Legal Decision Making, 71 U. CHI. L. REV. 511,
560-62 (2004) (suggesting that the "relative plausibility theory" is more consistent with
human decision making than the Bayesian approach). Such perspectives may well be
sound, but it is less clear than some of their proponents appear to believe that they entail acceptance of variants on the Free Proof idea. See, e.g., Allen, FactualAmbiguity and
a Theory of Evidence, supra, at 631 n.82 (indicating that a theory of Free Proof is "implicit" in his holistic account). Any holistic or coherence-based approach must distinguish between identifing the initial field of items on which the reasoning process is
applied and specifying the method of reasoning that will be applied to that field. Evidentiary holism addresses the latter issue, but is in fact agnostic on the question of how
the initial field is selected. As a result, a rule-based approach to deciding what constitutes the field is fully consistent with a holistic approach to what should be done with
that field. And as long as a rule-based field selection is compatible with a holistic
method of reaching epistemic conclusions from that field, nothing about epistemic
holism either presupposes or entails acceptance of Free Proof-like principles and rejection of exclusionary epistemic or evidentiary rules.
The most noteworthy example being the constitutonalization of some aspects
of the hearsay rule after Crawford v. Washington, 541 U.S. 36, 68 (2004).
84 See, e.g., Friedman, supra note 62, at 985 (arguing
that "the over-valuation concern should [not] lead to exclusion of... evidence"); Bernard Grofman & Heathcote
W. Wales, Modeling Juror Bias, 5 LEGAl_ THEORY 221, 224 n.10 (1999) (criticizing the
existing exclusionary rules of evidence as based on "paternalistic notions about the
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with some empirical (usually experimental) evidence.8 But although
such arguments seek to shift the terms of the debate, they do not seek
to alter the current trend in evidence law, for they support rather than
resist the general movement in favor of greater admissibility. After all,
if juries are less dumb than we thought they were, and ifjuror dumbness is the primary basis for many of the traditional exclusions, then
discovering that jurors are not so dumb supports the admission of
previously excluded evidence and the relaxation of the traditional
rules against hearsay, character, past acts, nonoriginal documents, and
much else.
Yet although we increasingly see the 'juries are not as dumb as
you think they are" argument for allowing lay jurors to hear what
judges sitting withoutjuries often take it upon themselves to hear, we
still do not see much of the 'judges are not as smart as they think they
are" argument, an argument that, to the extent it is sound, suggests a
quite different conclusion-that judges, rather than seeking to relax
the rules of evidence for themselves, should instead impose on themselves (or have imposed upon them) many of the same rules of exclusion that they routinely apply to the juries they manage and instruct.
This latter argument sails directly into the prevailing winds of evidence law, for rather than seeking to ameliorate the effects of the traditional exclusionary rules by relaxing those rules when juries do not
competence of jurors to evaluate evidence"); Nance, supra note 16, at 229 (arguing
that justification for exclusionary rules of evidence should not primarily focus on overblown "concerns about the irrational behavior of weak-minded lay jurors"); Richard D.
Friedman, Anchors and Flotsam: Is the Law of Evidence "Adrift"?, 107 YALE L.J. 1921, 196667 (1998) (book review) (suggesting that justiciable exclusionary evidentiary rules are
justified not by juror cognitive deficiencies but instead by conceptions of individual
rights).
85 See Dale A. Nance & Scott B. Morris, Juror
Understanding of DNA Evidence: An
EmpiricalAssessment of PresentationFormatsfor Trace Evidence with a Relatively Small Random-Match Probability, 34 J. LEGAL STUD. 395, 435 (2005) (concluding, after empirical
study, that jurors "generally make reasonable use of complex material" (quoting Neil
Vidmar & Shari S. Diamond, Juries and Expert Evidence, 66 BROOK. L. REV. 1121, 1166
(2001))); Dale A. Nance & Scott B. Morris, An Empirical Assessment of PresentationFormats for Trace Evidence with a Relatively Large and Quantifiable Random Match Probability,
42JURIMETRICSJ. 403, 444 (2002) (countering concerns thatjuries overvalue scientific
evidence with research suggesting that juries actually tend to undervalue such evidence). For a summary of some of the social science evidence, much (but hardly all)
of which supports the traditional skepticism about juries, see Ehud Guttel, Overcorreclion, 93 GEO. LJ. 241, 253-60 (2004); Daniel A. Krauss & Bruce D. Sales, The Effects of
Clinical and Scientific Expert Testimony on Juror Decision Making in Capital Sentencing, 7
PSYCHOL. PUB. POL'Y& L. 267, 274 (2001).
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sit, it seeks to strengthen those rules even when allegedly cognitively
superiorjudges are sitting as the triers of fact.
Although I put the issue in terms of "smart" and "dumb," these
words are only a rhetorical flourish. The precise claim here is that
even judges are often afflicted with the kinds of cognitive failings that
juries are,86 and that many of the same reasons that exist for imposing
second-order exclusionary (or other) rules on juries' first order epistemological assessments also apply to the arguments for imposing second-order rules on the first-order epistemological assessments of
judges.
This argument is best put forth as a hypothesis subject to further
testing, for, as yet, we have only a limited stock of such tests. What we
know about jury behavior we know from experiments on mock (and
occasionally real 7 ) juries, 88 or from laboratory experiments on ordi-
86
Cognitive failings include not only the failures of overvaluation, but also the
failures of undervaluation. See Nance & Morris, Juror Understanding,supra note 85, at
397 (recognizing the risk that jurors might both overvalue and undervalue scientific
evidence). And although an exclusionary rule would be a bizarre remedy for the failing of undervaluation, the larger point is that even a failure of undervaluation might
usefully be corrected by some sort of second-order rule whose existence and power
would be in tension with the Free Proof tradition. Even if that second-order rule is not
an exclusionary one, it still might inflate (or decrease) the weight of admitted evidence, or include that which would otherwise be excluded. On inclusionary rules, see
EDWARD W. CLEARY ET AL., MCCORMICK ON EVIDENCE § 24, at 56-57 (3d ed. 1984) (distinguishing "wide-open" and "restrictive" rules regarding cross-examination);
SCHAUER, PLAYING BY THE RULES, supra note 63, at 91-92; Dale A. Nance, Verbal Completeness and Exclusionary Rules Under the Federal Rules of Evidence, 75 TEX. L. REv. 51, 52
(1996) (describing the "rule of completeness" which "unlike almost all other admissibility rules.., is inclusionary"). So even if the failings ofjurors are sometimes not the
failings of overvaluation, the real question is whether we have reason to believe that
any of the cognitive failings we observe in jurors are significantly less present in judges.
And if we do not have good reason to draw this distinction, then the larger issue, and
the one discussed at length above in Part III, is whether there isjustification for treating inquiry about facts as a substantially less rule-based affair than inquiry about the
applicable norms.
87 E.g., Shari Seidman Diamond et al., Revisiting
the Unanimity Requirement: The Behavior of the Non-Unanimous CivilJury, 100 Nw. U. L. REv. 201 (2006) (reporting study of
actual juries in fifty Arizona civil trials).
88 Eg, Richard R. Izzet & Walter Leginski, Group Discussion
and the Influence of Defendant Characteristicsin a SimulatedJury Setting, 93J. SOC. PSYCHOL. 271, 273-75 (1974)
(describing a mock jury study using undergraduates in an introductory psychology
course). Comprehensive surveys include Guttel, supra note 85, at 253-60 (discussing
experimental evidence that juries are often unable to ignore inadmissible evidence);
Robert MacCoun, Inside the Black Box: What Empirical Research Tells Us About Decisionmaking by Civil Juries, in VERDICT: ASSESSING THE CtvIL JURY SYSTEM 137 (Robert E.
Litan ed., 1993) (evaluating various methods used to study juror decisionmaking in
civil actions); Michael T. Nietzel et al., Juries: The Current State of the Empirical Literature,
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nary people (who are usually not so ordinary, but are instead college
sophomores taking psychology courses 9 ) that are typically extrapolated to support claims about the kinds of ordinary people who wind
up on juries. 90 But implicit in the existing literature and its methodologies is the view that while such experimental subjects are more or
less representative of the ordinary people who sit on juries, they are
not at all representative of judges. Nor is there a body of research directed precisely at the methodological question of whether college
sophomores are as representative of judges as fact finders as they are
of the ordinary reasonable person 9' as a fact finder. In the same vein,
we still wait for experiments holding constant the nature of the evidence and manipulating (in the technical sense) the education, intelligence, role, and training of the fact finder in order to determine
whether what we know and assume aboutjurors might apply to judges
as well. And in the absence of such experimental empirical conclusions, we assume thatjudges are less prone than juries to the cognitive
and decision-making failures we worry about in jurors, possibly because judges are smarter, possibly because they are better educated,
possibly because of their greater experience in hearing testimony and
finding facts,92 and almost certainly because of their legal training and
legal role-internalization.
in PSYCHOLOGY AND LAW: THE STATE OF THE DISCIPLINE 23 (Robert Roesch et al. eds.,
1999) (providing overview of learning on juror behavior derived from empirical research); see also GOLDMAN, supra note 19, at 298-99 (describing study in which mock
jurors watched a videotaped reenactment of a trial).
89 Who Needs Real Managers When You've Got Fraternity Bays?, PSYCHOL.
TODAY, Feb.
1998, at 26, 26.
90 See REID HASTIE ET AL., INSIDE THE JURY 38-41 (1983)
(explaining benefits and
disadvantages of using mock jurors in studies); Nancy Pennington & Reid Hastie, Practical Implications of PsychologicalResearch on Juror and Jury Decision Making, 16 PERSONALITY & SOC. PSYCHOL. BULL. 90, 94 (1990) (comparing studies using undergraduates
against those using individuals from actual jury pools); Nancy Pennington & Reid
Hastie, Juror Decision-Making Models: The Generalization Gap, 89 PSYCHOL. BULL. 246,
279-84 (1981) (evaluating methodologies for research on jury decision making). An
interesting example of the phenomenon is Fred E. Inbau, Lay Witness Identification of
Handwriting(An Experiment), 34 ILL. L. REV. 433,434 (1939), which used an experiment
conducted on Northwestern University law professors to draw conclusions about the
behavior of layjurors.
91 Or, as the English so quaintly put it, "the man on the Clapham omnibus."
E.g.,
McQuire v. W. Morning News Co., [1903] 2 K.B. 100, 109.
92 And possibly because they are like us.
93 See Gregory Mitchell, Mapping Evidence Law, 2003 MICH. ST. L.
REv. 1065, 1122
(differentiating the quality of decisions made by judges and juries by referencing the
"repeat player" status of judges and the higher standard of accountability placed on
them). Kalven and Zeisel identified a divergence between the results reached by juries
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In the absence of much empirical evidence, therefore, and with
the hope that there will be more of just these kinds of experiments, a
few observations are in order. First is that the empirical evidence that
does exist supports the 'judges are not as smart as they think they are"
view, although primarily in the context of the ability to disregard constitutionally inadmissible evidence rather than in the more germane
(here) context of overvaluing, or otherwise mis-assessing, actually
probative evidence.94 In addition, although we may not know much
about the actual cognitive abilities ofjudges as compared to juries, we
do know quite a bit about the tendency of people, and especially professionals, to overestimate their own cognitive abilities. And what we
know is not encouraging. Consider, for example, the research on actuarial versus clinical decision making.9 5 In numerous contexts, in-
and the results on the same facts reached by judges in HARRY KALVEN, JR. & HANS
ZEISEL WITH THOMAS CALLAHAN & PHILIP ENNIS, THE AMERICANJURY 56 (1966) (finding that judges and juries disagree 24.6% of the time), but their methodology may
have overestimated the degree of divergence, and in any event does not allow a conclusion about whether the divergence was attributable to mistakes by juries or mistakes
byjudges. See GOLDMAN, supra note 19, at 312 (noting that the Kalven and Zeisel study
was limited to criminal cases and failed to identify how errors were distributed between
judges and juries). Indeed, because the judges were more inclined to convict in
criminal cases than juries, one explanation is that judges were more inclined to go beyond the evidence and rely on their own beliefs about how the defendant wound up in
the dock in the first place.
94 AndrewJ. Wistrich, Chris Guthrie &JeffreyJ. Rachlinski, Can
Judges Ignore Inadmissible Information? The Difficulty of Deliberately Disregarding,153 U. PA. L. REV. 1251,
1330-31 (2005) (concluding that judges are frequently unable to ignore inadmissible
information in making decisions); see also Chris Guthrie,JeffreyJ. Rachlinski & Andrew
J. Wistrich, Inside theJudicial Mind, 86 CORNELL L. REv. 777, 821 (2001) ("Like the rest
of us, [judges] use heuristics that can produce systematic errors in judgment."); Paul
H. Robinson & Barbara A. Spellman, Sentencing Decisions: Matching the Decisionmaker to
the Decision Nature, 105 COLUM. L. REv. 1124, 1138-43 (2005) (discussing differences
and similarities between judge and jury fact-finding abilities).
95 See, e.g., JOHN MONAHAN, PREDICTING VIOLENT BEHAVIOR:
AN ASSESSMENT OF
CLINICAL TECHNIQUES 97 (1981) (claiming that studies have repeatedly shown actuarial predictions to be superior to clinical predictions); Stephen D. Gottfredson, Statistical and Actuarial Considerations,in THE PREDICTION OF CRIMINAL VIOLENCE 71, 75 (Fernaud N. Dutile & Clem H. Foust eds., 1987) (arguing that statistical models tend to
more accurately predict behavior than clinical judgments); N. Zoe Hilton & Janet L.
Simmons, The Influence of Actuarial Risk Assessment in ClinicalJudgments and Tribunal Decisions About Mentally DisorderedOffenders in Maximum Security, 25 L. & HUM. BEHAV. 393,
405 (2001) (recommending that actuarial assessments be substituted for clinical judgments in decisions to release mentally ill offenders); Ann Ward & John Dockerill, The
PredictiveAccuracy of the Violent Offender Treatment Program Risk Assessment Scale, 26 CRIM.
JUST. & BEHAV. 125, 136-37 (1999) (presenting advantages of an actuarial model for
identifying violent offenders). The opposing view, a decidedly minority one, is represented in, for example, Thomas R. Litwack, Actuarial Versus Clinical Assessments of Dan-
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cluding release from prison on parole, sentencing to probation rather
than prison, release from institutions of those who have been civilly
committed for reasons of risks of danger to themselves and others,
and many more, it is important to be able to predict future dangerousness. One way of doing this is actuarial, with the predictor asked
to identify a small number of readily observable features whose presence has in the past been shown to be a non-spurious predictive factor
with respect to future dangerousness. And the other way is clinical,
with trained professionals-psychologists, psychiatrists, social workers,
etc. -conducting face-to-face interviews and then making their best
qualitative, all-things-considered judgment about future dangerousness.
When such comparisons are drawn, almost all of the existing research indicates that actuarial assessments of dangerousness are typically superior to clinical assessments, and that one reason for this, although not the only reason, is that professionals typically overestimate
the power of their own professional skills, the reliability of their own
judgments, and the strength of their ability to assess a particular situa97
96
tion.
If we can extrapolate from this and related research, we
might have reason to believe that judges will typically overestimate
their own ability to assess facts, their capacity to rise above the cognitive failings of lesser mortals, and thus their own lack of need for the
kinds of exclusions (or, in theory, inclusions or weight-increasers 9 )
that are represented by many of the rules of evidence. 99 So even if, for
the sake of argument, we assume that judges are indeed better than
juries at not overestimating the value of hearsay evidence, at recognizgerousness, 7 PSYCHOL. PUB. POL'Y & L. 409, 437-38 (2001) (arguing that actuarial models are not reliable enough to replace clinical assessments).
96 See, e.g., Colin Camerer & Dan Lovallo, Overconfidence and Excess Entry: An Expelimental Approach, 89 AM. ECON. REV. 306, 311 (1999) (finding that subjects generally
overestimate their skills relative to their competitors'); Leilani Greening & Carla C.
Chandler, Why It Can'tHappen to Me: The Base Rate Matters, but OverestimatingSkill Leads
to UnderestimatingRisk, 27J. APPLIED SOC. PSYCHOL. 760, 774 (1997) (finding that most
subjects believed that their skill levels were better than average); Markus Glaser, Thomas Langer & Martin Weber, Overconfidence of Professionals and Lay Men: Individual Differences Within and Between Tasks? 26 (Apr. 26, 2005) (unpublished manu(concluding, after
script), available at http://papers.ssrn.com/abstract=712583
empirical study, that professionals tend to be overconfident when compared with a
control group of students).
W Some of the research is engagingly described
and applied in JAMES SUROWIECKI,
THE WISDOM OF CRowDS 31-36 (2004).
98 See supra note
86.
99 I assume, perhaps counterfactually, that judges are no more likely to over-assess
their own abilities than are other professionals.
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ing the risks of non-original documents, at taking alleged expertise
with a grain of salt, at giving character and prior acts showing a propensity to commit some current act their proper weight, and so on, it
appears that we also have reason to believe that the gap between jurors and judges in this regard, even if it does exist, will be systematically over-assessed by the judges themselves.
In addition, some of the cognitive failings that undergird the exclusionary rules of evidence are ones that may well resistjust the kind
of corrections that judges believe they are able on the basis of their
training and experience to make. Although the first wave of heuristics
and biases research-by Daniel Kahneman and Amos Tversky, most
prominently, but followed by many others as well' ..- was focused on
identification of the rationality deficits of decision makers, subsequent
waves have also looked at the extent to which some of these mistakes
can be completely or largely eliminated by simple awareness of the
bias or by somewhat more extensive "re-education."'0 ' And so, although the research indicates that awareness of the bias can eliminate
some biases-most of the framing biases, for example-the same research program also indicates that other biases are quite resistant to a
range of awareness-based de-biasing techniques-anchoring, for ex-
100Amos Tversky & Daniel Kahneman, judgment Under Uncertainty: Heuristics
and
Biases, inJUDGMENT UNDER UNCERTAINTY: HEURISTICS AND BIASES 3 (Daniel Kahneman, Paul Slovic & Amos Tversky eds., 1982); see also SCoTr PLOus, THE PSYCHOLOGY
OF JUDGMENT AND DECISION MAKING (1993); CHOICES, VALUES, AND FRAMES (Daniel
Kahneman & Amos Tversky eds., 2002); JeffreyJ. Rachlinski, Heuristics and Biases in the
Courts: Ignorance or Adaptation, 79 OR. L. REv. 61, 102 (2000) (discussing the problem
of "congnitive illusions" in legal decision making). There is an emerging skeptical tradition about this entire line of research, see, e.g., GERD GIGERENZER, CALCULATED
RISKS:
HOW TO KNOW WHEN NUMBERS DECEIVE YOU (2002); Gerd Gigerenzer &
Daniel G. Goldstein, Reasoning the Fast and Frugal Way: Models of Bounded Rationality,
103 PSYCHOL. RENT. 650, 651 (1996) (advocating a theory of "bounded rationality" instead of the "heuristics-and-biases view"); G. Gigerenzer, The Bounded Rationality of
ProbabilisticMental Models, in RATIONALITY: PSYCHOLOGICAL AND PHILOSOPHICAL PER-
SPECTIVES 284, 297-301 (K.I. Manktelow & D.E. Over eds., 1993) (challenging the notion of an "overconfidence bias"); Gregory Mitchell, VWhy Law and Economics'PerfectRationality Should Not Be Traded for Behavioral Law and Economics' Equal Incompetence, 91
CEO. L.J. 67, 138-39 (2002) (concluding that behavioral scientists often make inaccu-
rate assumptions in their study of human judgment), but, because even the skeptical
tradition values the use of rules and heuristics, the question of whether certain heuristics are examples of rationality or irrationality is not especially germane to my argument here.
101See Guthrie et al., Inside the Judicial Mind, supra note 94, at 822-25 (explaining
that judges could be taught to identify and address their congitive biases by considering more perspectives, limiting the use of heuristics, and avoiding specific cognitive
illusions).
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ample. 0 2 As a result, not only will some of the cognitive problems that
the rules of evidence are designed to guard against not be dramatically different forjudges and jurors,'0° and not only will some of them
resist the kind of awareness-based de-biasing that is implicit in the
judge-juror distinction, but the same pathologies that lead judges to
believe they are not subject to juror pathologies will lead those same
judges to believe, often erroneously, that they are especially able, as a
result of awareness, to eliminate what few biases they believe they
have.
Finally, it is not irrelevant that the judges who in a nonjury trial
must determine the facts are the same ones who must make all of the
legal rulings and all of the procedural rulings, and thus who must, in
the final analysis, simply decide the case. Although few are so naive as
to believe that jurors find facts without regard to the ultimate outcome, one important Realist message is that even judges make their
intermediate or nonultimate determinations with some awareness of
how these determinations will affect their own view of who, at the end
of the day, ought to win the case. 104 Now of course this Realist claim is
an empirical one, 105 and it is possible that the claim is mistaken for
many or even most judges. But, insofar as the claim is sound-Karl
102
See, e.g., Timothy Wilson et al., A New Look at Anchoring Effects: Basic Anchoring
and its Antecedents, 4J. EXPERIMENTAL PSYCHOL.: GEN. 387, 397 (1996) (revealing that
study participants continued to exhibit anchoring, even when forewarned about anchoring effects).
103 SeeJon D. Hanson & Douglas A. Kysar, Taking Behavioralism
Seriously: The Problem of Market Manipulation,74 N.Y.U. L. REV. 630, 633 (1999) (observing that cognitive
biases "are not limited to the uneducated or unintelligent, and... are not readily capable of being unlearned").
104 This perspective is central in much of the Realist canon. See, e.g., FRANK,
supra
note 68, at 131 (indicating that ajudge's decision may be tailored to be consistent with
his view of "the case before him"); Jerome Frank, Are Judges Human? Part I: The Effect
on Legal Thinking of the Assumption that Judges Behave Like Human Beings, 80 U. PA. L.
REv. 17, 47 (1931);Jerome Frank, AreJudges Human? PartII: As Through a Class Darkly,
80 U. PA. L. REv. 233, 242 (1931); Karl N. Llewellyn, Remarks on the Theory of Appellate
Decision and the Rules and Canons About How Statutes Are To Be Construed, 3 VAND. L. REv.
395, 398 (1950) (noting that it "makes a tremendous difference" whether a court responds more strongly to its "sense of the type of situation" or its "sense of a particular
controversy between particular litigants"); Max Radin, Statutory Interpretation,43 HARv.
L. REV. 863, 881 (1930). On the potentially distorting effect of the pressure to decide
the immediate case correctly, see Frederick Schauer, Do Cases Make Bad Law?, 73 U.
CHI. L. REv. 883 (2006).
105See Brian Leiter, Legal Realism and Legal Positivism Reconsidered, 111 ETHIcS
278,
279 (2001) ("The real dispute between Realism and Positivism... exists at the empirical level .... "); Brian Leiter, Realism, Hard Positivism, and Conceptual Analysis, 4 LEGAL
THEORY533, 547 (1998) (same).
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Llewellyn often focused on the power of the particular'° and Jerome
Frank's commitment to the inevitability of particularism was considerably stronger Still 17-then the lesson is that potentially distorted intermediate rulings may increase as the decision-making responsibilities about the admissibility of evidence and about the ultimate
resolution of the case are merged. If there is a reason for at times requiring jurors to answer special interrogatories in addition to (or occasionally instead of) delivering general verdicts, then that same reason may caution against assuming that a judge in charge of all of the
decisions in some case will make intermediate rulings undistorted by
that judge's view of the proper outcome for the case as a whole. °o
And insofar as that risk is real, then one way of understanding the occasionally formal, rigid, and mechanical application of the rules of
evidence is to encourage a separation of functions across, and at times
even within, decision makers. The judge who is required to enforce
the rules of evidence on herself' 9 is a judge who might in an ideal
world be able to function simultaneously as, in Hare's terms, archangel and prole."0 This is the judge who can screen herself off from just
the kinds of facts that might in a perfect world produce a more accurate factual determination, but who in an imperfect or second-best
world might make better decisions under circumstances in which
there are things-and relevant things at that-that she simply does not
know. But whether real judges can act this way in practice-whether
real judges can stop thinking about pink elephants-is an empirical
question whose answer is quite likely to be "rarely."
VI. BUT WHICH RULES?
The conclusion of the foregoing analysis is simply stated: there
appears to be more justification for a rule-based approach to evidence
106 TWINING,
supra note 68, at 369 (suggesting that attention to "the actual and the
particular" was essential to Llewellyn's realism).
107 See FRANK, supra note 68, at 101 ('judicial judgments... are worked out backward from conclusions .. ").
108 See generally Edmund M. Morgan, A Brief History of
Special Verdicts and Special Interrogatories,32 YALE L.J. 575 (1923). Perhaps the most famous special interrogatory
case is the reversal of the conspiracy conviction of Dr. Benjamin Spock because the
trial judge, in a criminal case, had impermissibly used special interrogatories as a way
of avoiding the possibility ofjury nullification. United States v. Spock, 416 F.2d 165,
180-91 (lst Cir. 1969).
109 See generally Thomas C. Schelling, Enforcing Rulies on Oneself I J.L. ECON. & ORG.
357 (1985).
110 HARE, supra note 28, at 44-45.
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than is accepted nowadays, and the idea of Free Proof may have more
cognitive and epistemic disadvantages than Bentham thought almost
two centuries ago and than Bentham's numerous academic and judicial followers seem to think now.'
But that the law of evidence
should plausibly be a rule-based enterprise says nothing about what
those rules should be. More to the point, the conclusion that we
should have (intrinsic as well as extrinsic) rules of evidence does not
entail the conclusion that we should have the intrinsic rules of evidence that we have now.
Although the argument for a rules-based approach to evidence
leaves open the question of what those rules should be, there is also a
rule-based argument that those rules should be substantially the rules
we happen to have now, warts and all. Once we appreciate that a
principal argument for rules derives from the advantages of having
readily accessible and easily understandable indicators of deeper but
harder-to-apply primary considerations, we can see that many of these
advantages may well exist in an entire set of rules simply because of
their existence. The very existence of the full set of evidence rules we
happen to possess breeds a familiarity that increases understanding,
and has developed in such a way over time that the common law process has served to remove many of the most obvious defects. Thus, if a
large part of the case for individual rules is that the mistakes consequent from the under- and overinclusiveness of crude rules are sometimes fewer and less consequential than the mistakes that decidedly
nonideal decision makers will make in the absence of rule-based guid-
I
Alex Stein also challenges the Free Proof tradition, but on grounds quite
different from those advanced here. Stein insightfully sees the rules of evidence as allocating the risks of error as between the parties, but offers little other than a brief nod
to transparency and separation of powers on why such a goal need be served by rules as
opposed to case-by-case allocation. STEIN, supra note 6, at 107-40; Alex Stein, The Refoundation of Evidence Law, 9 CAN. J.L. &JURISPRUDENCE 279, 285-86 (1996). By contrast, the argument here rests primarily on the virtues of rules as rules in an epistemic
context, independent of the substantive goals that such rules might serve. Erica
Beecher-Monas argues that a structured (rule-based) reasoning process for evidentiary
determinations serves due process goals, and that judges should serve as gatekeepers
for the jury. Erica Beecher-Monas, Heuristics, Biases, and the Importance of Gatekeeping,
2003 MICH. ST. L. REv. 987, 989-90. She does not, however, address directly the question of who should serve as the gatekeepers for the judges, although elsewhere she
maintains, correctly in my view, that judges should use heuristics in making their own
determinations about the admissibility of scientific evidence. Erica Beecher-Monas,
The Heuristics of Intellectual Due Process: A Primerfor Triers of Science, 75 N.Y.U. L. REV.
1563, 1589-90 (2000).
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ance,12 then just this argument, at one higher remove, may suggest
that the mistakes embedded in a distinctly non-ideal set of rules may
turn out to be less than the mistakes that would come from empowering some non-ideal group of rule makers to start anew, or from expecting some nonideal group of rule appliers to apply an array of
newer rules with which they are much less familiar. Or, to put it
somewhat more directly, at times it is genuinely optimizing to leave
well enough alone.
Still, it may not be the case that the mistakes incorporated in the
existing array of evidence rules-many of which are the function of
hoary but mistaken psychological assumptions-are fewer in number
and consequence than the mistakes that would come from creating a
new and unfamiliar set of evidence rules, even after we have accepted
the idea that the Free (or Free-er) Proof approach is flawed and that a
rule-based understanding of evidence has much to commend it. And
although I cannot even sketch here the beginnings of what such a
new, but still rule-based, approach to evidence-for judges and juries
alike-would look like, providing a few examples may still be in order.
The most obvious place to start is with the hearsay rule, because
this is the rule, constitutional issues of confrontation in criminal cases
aside,' that is most under attack. As discussed above in Part III, it is
the rule perhaps most widely ignored by trial judges sitting without a
jury, it is the stock example in the academic literature advocating the
relaxation or elimination of many of the rules of evidence, it is often
the subject of calls for dramatic constriction or elimination,14 and it
12
See ALEXANDER & SHERWIN, supra note 72, at 53-95 (exploring the tension be-
tween the imperfection of rules and the hazard of an unbound decision maker);
SCHAUER, PLAYING BY THE RULES, supra note 63, at 100 ("[A] system... attains the
benefits brought by rules only by relinquishing its aspirations for ideal decisionmaking."); Louis Kaplow, Rules Versus Standards: An Economic Analysis, 42 DUKE LJ.
557, 586-96 (1992) (exploring the implications of overinclusiveness and underinclusiveness in determining the favorability of rules versus standards); Russell B. Korobkin,
Behavioral Analysis and Legal Form: Rules vs. Standards Revisited, 79 OR. L. REV. 23, 43
(2000) (expressing a preference for rules when citizens and adjudicators are not both
"relatively perceptive.., and homogeneous"). But see Frederick Schauer, The Convergence of Rules and Standards,2003 N.Z. L. REV. 303 (considering the possibility that rules
and standards may converge over time, making the choice between them less consequential).
]II See supra note 47.
114 See, e.g., Richard D. Friedman, Toward a PartialEconomic, Game-Theoretic
Analysis
of Hearsay, 76 MINN. L. REV. 723, 724-25 (1992) (observing that criticisms of the hearsay rule "will not... surprise anybody familiar with the evidentiary debate"); Park, supra note 49, at 54 (arguing that the hearsay rule should be retained in criminal cases
but substantially limited in civil litigation); Eleanor Swift, Abolishing the Hearsay Rule, 75
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has, by statute, been significantly diminished in the United Kingdom.115 Yet despite this onslaught, there remain sound reasons to believe that the hearsay rule would desirably continue in a rule-based
approach to the law of evidence. Initially, all of the cognitive arguments set out in Part V above would apply plainly to hearsay, such that
we can expect there to be approximately as much reason to doubt a
judicial weighing of the value of hearsay evidence as a jury weighing.
And once we have put the likely fallacy of comparative juror cognitive
incompetence to rest, the principal reason for rejecting a hearsay rule
is eliminated as well. 116 In addition, and perhaps more importantly,
the hearsay rule serves an important evidence-generatingfunction, or,
to put it differently, an important best evidence-in the nontechnical
sense of that term-role.1V By excluding hearsay evidence (subject to
all of the usual qualifications, caveats, exemptions, and exceptionsor at least many of them), the hearsay rule compels the parties to
search for more rather than less direct accounts, and to locate and
bring forward the most immediate and cross-examinable witnesses."'
Although an exclusion of hearsay will exclude some relevant evidence,
such an exclusion will also compel the production of some better evidence, and it may well be that the aggregate value of the better evi-
CAL. L. REV. 495, 518-19 (1987) (advocating replacing the current hearsay rule in some
circumstances with a requirement for "foundation witnesses" who testify as to the origin and reliability of the hearsay).
115 Criminal Justice Act, 1988, c. 33 §§ 26-28 (Eng.); see also Evidence Act, 1995,
pts. 3.1-3.2 (Austl.); Evidence Act, 1995, §§ 55-75 (N.S.W., Austl.).
116 There are some empirical studies of jury evaluation
of hearsay, but none directly addressed to the comparative question of judge-juror competence. See, e.g.,
Margaret Bull Kovera et al., Jurors' Perceptions of Eyewitness and Hearsay Evidence, 76
MINN. L. REV. 703, 719 (1992) (observing that 'juries rely more heavily on eyewitness
testimony than hearsay testimony"); Peter Miene et al., Juror Decision Making and the
Evaluation of Hearsay Evidence, 76 MINN. L. REv. 683, 699 (1992) (finding that in a
mock juror study, introducing hearsay to a case based on circumstantial evidence
raised the conviction rate by four percent, and that the conviction rate in mock cases
based on eyewitness testimony actually decreased when hearsay was introduced); Regina A. Schuller, Expert Evidence and Hearsay: The Influence of "Secondhand" Information
on Jurors' Decisions, 19 L. & HUM. BEHAV. 345, 357 (1995) (indicating that jurors exposed to hearsay with limiting instructions reached similar verdicts to those exposed to
the same information in admissible form).
117 That many of the rules of evidence are better understood
as attempts to generate the best available evidence is an insight that has been prominently pressed by Dale
Nance. See, e.g., Dale A. Nance, Conditional Probative Value and the Reconstruction of the
Federal Rules of Evidence, 94 MICH. L. REv. 419 (1995); Dale A. Nance, ConditionalRelevance Reinterpreted, 70 B.U. L. REv. 447, 448 (1990); Nance, supra note 16, at 270-94.
118 On the view that evidence is something produced and created, and not
just
there, see Mark Cooney, Evidence as Partisanship,28 LAW & Soc'Y REv. 833, 834 (1994).
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dence marginally developed will be greater than the aggregate loss of
the relevant evidence marginally excluded.
With respect to the connected issues of character and past acts,
the analysis is different but the conclusions are much the same. Here
the weight of modern social science research suggests that the concerns about overweighting are sound."9 And since much of the conventional academic and judicial wisdom is that evidence of past acts,
prior behavior, and pertinent character is indeed highly probative,12
perhaps here, more than anywhere, do we need the exclusionary rules
even more for the judges who have such a belief than forjurors, or, at
the very, least, no less. Moreover, the same evidence-generating considerations apply here as for hearsay, considerations that are agnostic
as between jury and jury-free trials. If the adjudicative system has
good moral and epistemic reasons for preferring evidence closely targeted to the particular act at issue, 121then the exclusion of evidence of
past acts and general traits of character, even if relevant, will provide
19
Some of the research is cited and discussed in Campbell v. Greet; 831 F.2d 700,
707 (7th Cir. 1987); see alsoJoel Schrag & Suzanne Scotchmer, Crime and Prejudice: The
Use of CharacterEvidence in Criminal rials, 10J.L. ECON. & ORG. 319, 341 (1994) (arguing that allowing character evidence can make the jury too punitive toward habitual
criminals). But see Susan Marlene Davies, Evidence of Characterto Prove Conduct: A Reassessment of Relevancy, 27 CRIM. L. BULL. 504, 532 (1991) ("[T]he view that character evidence in general is not probative of conduct can no longer draw support from the psychological materials."). Much of the research is directed to exposing what in the
literature is typically referred to as the "fundamental attribution error." See RICHARD
NISBETT & LEE Ross, HUMAN INFERENCE: STRATEGIES AND SHORTCOMINGS OF SOCIAL
JUDGMENT (1980) (defining the fundamental attribution error as "the tendency to attribute overt behaviors to corresponding personal dispositions, thereby underestimating the causal role of environmental influences").
120 See United States v. Daniels, 770 F.2d 1111,
1116 (D.C. Cir. 1985) (conceding
that evidence of prior similar acts is not excluded because it is logically irrelevant);
David P. Bryden & Roger C. Park, "Other Crimes" Evidence in Sex Offense Cases, 78 MINN.
L. REv. 529, 571 (1994) (recognizing the probative value of evidence of a defendant's
history of sex crimes); H. Richard Uviller, Evidence of Characterto Prove Conduct: Illusion,
illogic, and Injustice in the Courtroom, 130 U. PA. L. REv. 845, 848-49, 882-85 (1982) (arguing that evidence of prior similar acts can be highly probative under certain circumstances, and should be admitted); see also Boardman v. Dir. of Pub. Prosecutions,
(1974) 3 All E.R. 887, 892-95 (H.L.) (substantially restricting the application of the
"propensity rule," which excluded evidence of prior similar incidents).
121 See United States v. McCourt, 925 F.2d 1229, 1235-36 (9th Cir. 1991) ("Our system ofjustice should not permit the trier of fact to infer that because someone was a
bad guy once, he is likely to be a bad guy again."); United States v. Mothershed, 859
F.2d 85, 89 (8th Cir. 1988) (announcing that "[w]e do not convict people of crimes
simply because of their propensities; we do so because of what they have actually
done"); United States v. Hodges, 770 F.2d 1475, 1479 (9th Cir. 1985) (concluding that
a defendant "must be tried for what he did, not for who he is").
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the incentives for the parties to provide evidence more focused on the
particular acts and events at issue in the trial.
Similar conclusions might even apply to some aspects of the oftenIt is true
scorned and increasingly narrow original documents rule.
that the rule in its traditional clothing imposes cumbersome requirements on the introduction of reliable secondary evidence,1 23 but there
is little reason and no evidence to support the conclusion that judges
and jurors differ with respect to the tendency to mis-evaluate secondary evidence that carries a whiff of suspicion. And there is no reason
at all to believe that the presence or absence of a jury makes a difference with respect to the evidence-generating side. So insofar as it is
desirable to have actual documents rather than, say, oral descriptions
of them, the rule seems well-designed to create the correct incentives
for the parties to preserve and come forward with the best evidence
conceivably available, at least with respect to writings.
None of this is to say that there are not other evidentiary rules that
we might well be rid of. But in many cases the arguments for discarding such rules apply to jury trials as well as judge-only trials, and thus
even the rules we would and should jettison are rules that do not and
should not depend on any comparative failures of juries vis-A-vis
judges sitting alone. But the larger point is even more direct. Even if
we reject the rule-based argument for keeping many of the rules we
have just because we have them, a properly designed new set of evidence rules124 would have little tolerance for distinguishing between
judge and jury, and would consequently wind up preserving even for
nonjury proceedings more of the traditionally jury-focused rules than
the typical judge or the typical Free Proof proponent has traditionally
acknowledged.
122
123
See supra notes 52-54 and accompanying text.
See Michael H. Graham, Evidence and Trial Advocacy: The Original Writing (Best
Evidence) Rule, 26 CRIM. L. BULL. 432, 435-38 (1990) (noting that the original documents rule prevents the admission of some witness testimony based on personal
knowledge).
124 "Which would likely include new rules we do not now have.
For example, Richard McAdams has suggested to me in conversation that cognitive problems of confirmatory bias-seizing on evidence supporting one's prior beliefs and ignoring evidence
contradicting it-might suggest the necessity of substantially more rules about the order
of presenting evidence than we now have.
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CONCLUSION: SOME OPERATIONAL POSSIBILITIES
Thus there are important issues to be explored-many of them
empirical-before we quickly assume that judges can transcend those
perceived cognitive and decisional failings ofjurors that inspired the
law of evidence in the first place. Moreover, ifjudges are, as often as
jurors, subject to the kinds of decisional distortions that the exclusionary rules of evidence are designed to reduce, judicial awareness of
the issue may not help very much. For even were judges to be fully
aware of the problem of their own potential cognitive failings, and
even were judges consequently to recognize the value of self-binding
rules, it would likely remain the case that even the sophisticated judge
recognizing the value of the self-binding rule would occasionally believe, sometimes correctly but sometimes erroneously, that this is the
case in which the rule should not be applied, even taking into account
the value of having the seltbinding rule in the first place, and even
taking into account the possibility of her own error in making this very
assessment.
If we believe that this possibility of largely uncorrectable judicial
error may exist, and if we therefore believe that on an excess number
of occasions judges will mistakenly believe that the decision before
them is not one in which the rule, all things considered, should apply,
then there appears to be some need for a mechanism of external enforcement. But what form might such a mechanism of external enforcement take? Not only is there a harmless error rule as to constitutional issues in criminal cases,' 2 5 but there is also, and a fortiori, an
obvious but less often discussed harmless error rule for civil cases and
nonjury criminal cases in which erroneous evidentiary rulings do not
present constitutional issues. 126
That being the case, an important
question is whether there remains any possible way in which trial
125 See Chapman v. California, 386 U.S. 18, 23-24
(1967).
126
See FED. R. EVID. 103(a) (requiring that "a substantial right of the party" be af-
fected for a claim of error to be preserved); see also Doty v. Sewall, 908 F.2d 1053, 1057
(1st Cir. 1990) (noting that in civil cases, appellate courts need not review evidentiary
decisions unless a "substantial right" of a party is affected). Indeed, the attitude is even
more deferential than suggested in the text, because some appellate courts have gone
beyond the harmless error principle to create a presumption that judges sitting without ajury have not relied on any erroneously received inadmissible evidence. See Gov't
of Canal Zone v. Jimenez, 580 F.2d 897, 898 (5th Cir. 1978) ("Since appellant's case
was tried before a Judge, we do not have to determine whether this evidence was admissible."); United States v. Allstate Mortgage Corp., 507 F.2d 492, 494 (7th Cir. 1974)
("Absent a showing of substantial prejudice, the court, in a bench trial, is deemed to
have considered only admissible and relevant material.").
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judges sitting without a jury could actually be forced to take the rules
of evidence seriously, assuming now that it would be good for them to
do so. If evidentiary issues do not in general wind up in appellate
courts-and that is why, as the "case" books make clear, evidence is
not a subject well learned or well taught by the use of cases, 127 even assuming the general wisdom of a focus on appellate cases as a form of
law school instruction-then it appears as if the normal vehicle for the
correction of trial error is disproportionately unavailable for evidentiary issues. Indeed, one way of describing the current state of affairs
is in terms of trial judges ignoring the rules of evidence in nonjury
cases precisely because they know they can get away with it. Because
the rules of evidence-as opposed to the particularized techniques of
epistemic evaluation-impose second-order constraints on first-order
epistemic judgments of admissibility, we might (or at least some of us
might 1 think that these are just the kinds of constraints that require
external enforcers. And if the most common mechanism of external
enforcement-appellate review-is unavailable, is there any hope for
changing the current state of affairs?
One possibility, of course, is to change the current attitude of appellate courts about reviewing evidentiary rulings in noncriminal,
non-constitutionally-implicated cases. But this approach is, at best, a
remote possibility, in part because of the textual entrenchment of the
harmless evidentiary error rule in Rule 103(a) of the Federal Rules of
Evidence and its state counterparts,129 and in part because we have no
reason to believe that appellate courts are much interested in increasing their workload in general, or in increasing the number of correctoutcome cases that they will scrutinize closely. The statutory issue
aside, however, one might imagine that a change in the incentives
created by the existing harmless evidentiary error rule could be effectuated insofar as appellate courts, without much increasing their
workload, were to adopt the common technique of low-probability
high-penalty enforcement. 130 If the occasional trial judge who ignored
the rules of evidence were to be subject to judicial scolding (and
-)
127
See RICHARD 0. LEMPERT ET AL., A MODERN APPROACH TO EVIDENCE:
TEXT,
PROBLEMS, TRANSCRIPTS AND CASES, at ix (3d ed. 2000) ("This is not a casebook.").
128 See Frederick Schauer, JudicialSupremacy and the Modest Constitution,
92 CAL. L.
REV. 1045, 156-59 (2004).
129 And also in 28 U.S.C. § 2111 (2006).
30 The technique is especially useful for so-called white collar crimes, including
tax crimes, and that is why law enforcement authorities are frequently so concerned to
maximize the publicity attached to such cases.
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scoldings in appellate opinions are noticed, and likely have a substantial in terrorem effect on the future behavior of both the scolded judge
and otherjudges as well), or if evidentiary mistakes were thought relevant to judicial promotion, for example, then it might well be that appellate courts now have at their disposal a moderately wide range of
techniques for changing current behavior short of engaging in an extremely improbable course of reversing a large number of cases (most
of which will have reached the right result) simply because of nonoutcome-changing evidentiary errors.
In terms of larger issues of institutional design, there exist in various decision-making domains mechanisms by which the fact-finding
and decision-making functions are separated. Obviously the institution of the jury partakes of some of this, but it would be a mistake to
move too quickly from recognizing some of the very real failings ofjuries to the conclusion that the merger of fact finding and law applying
(or judgment rendering) is not itself without significant flaws. And
this holds even more true with respect to the merger of the quite different tasks of determining admissibility and making a factual judgment on the basis of the admitted facts. Thus, and without getting
into detail here, it may be possible to conceive of some number of institutional designs in which a significantly rule-based evidence-filtering
process could maintain its rule-based features by separating that process from the goals of determining what happened as a matter of fact
and then ultimately determining the outcome of some dispute. We
see some of this in the process by which federal magistrates in searchand-seizure and confession cases make factual determinations to
screen even from the trial judge those items of relevant, but unconstitutionally obtained, evidence that are best left out of the proceedings
entirely. And the increasing use of discovery magistrates is an example of a process in which fact production is separated from fact finding.131 We can imagine various other designs in which separate proceedings and separate adjudicators in essence prepare the record
which will then be the basis for decision by someone else. This is a
common feature of various investigations outside of the formal legal
process, in which corporate officials delegate an evidence-evaluating
or fact-finding mission to others while retaining the power of final decision for themselves. Under such an approach the fact finders or evi-
131
See, e.g., Crown Life Ins. Co. v. Craig, 995 F.2d 1376, 1379 (7th Cir. 1993). For
some discussion of the idea, see Frank H. Easterbrook, Discovery as Abuse, 69 B.U. L.
REV. 635, 639-40 (1989) (suggesting that such an arrangement is "unwise").
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dence evaluators would be somewhat more inclined to see epistemic
rule following as part of the very point of their enterprise, and would
consequently be less inclined to discard those rules than if they saw
those rules as obstacles in the way of reaching a final decision.
These possibilities are obviously remote in the short or intermediate term. Still, recognizing them might open up a wide range of possibilities for significant procedural reform to embody the importance
of constraining judges as well as juries by exclusionary rules of evidence. But because such extreme forms of change in the institutional
design of the trial are so unlikely in the foreseeable future, I will leave
exploration of them for another occasion. At the moment, it is sufficient to conclude that it is hardly self-evident that the practices of so
many trial judges in assuming that the rules of evidence are for other
and lesser people is as beyond reproach and beyond remedy as is currently believed. More broadly, it is far from clear that the increasing
academic and judicial momentum in favor of some form of Free Proof
rests on solid empirical or conceptual foundations. Factual inquiry no
less than normative legal prescription is usefully assisted by rules that
are taken seriously, a point systematically neglected by the Free Proof
tradition. That tradition, in the large as well as in some of its less ambitious manifestations, thus stands exposed of failing to explain why
rules are important for law but not for facts, and of continuously
clinging to a romantic image of the trial judge as a figure largely free
of the cognitive failings we see and appreciate in lay jurors. Until the
Free Proof tradition can meet the burden of explaining why these two
significant omissions of justification do not substantially undercut the
whole Free Proof idea, there will remain a significant place in the law
of evidence for real rules that impose real constraints on real judges.
In law this should come as little surprise.
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